Help me fix the following errors on my code:

Line $11$ : Incompatible types in assignment $($expression has type "float", variable has type "int"$)[$assignment$]$

Line $18$ : Unsupported operand types for $+("$str$"$ and "int"$)[$operator$]$

Line $33$ : Incompatible types in assignment $($expression has type "float", variable has type "int"$)[$assignment$]$

Line $35$ : Incompatible types in assignment $($expression has type "float", variable has type "int"$)[$assignment$]$

Line $37$ : Incompatible types in assignment $($expression has type "float", variable has type "int"$)[$assignment$]$

Line $39$ : Incompatible types in assignment $($expression has type "float", variable has type "int"$)[$assignment$]$

Line $46$ : Unsupported operand types for $+("$int$"$ and $"$str$")[$operator$]$

def toFixed$($value$,$ digits$)$:

return $"\%.*$f$"\%($digits$,$ value$)$

subTotal $=0$

tAXRATE $=0\mathrm{.}06$

var$\_$continue $=$ True

print$("$Enter prices:$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t or $-1$ for subtotal $\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t or $0$ for total:"$)$

inPrice $=$float$($input$())$

while inPrice $!=0$:

while inPrice $>0$:

subTotal $=$ subTotal $+$ inPrice

inPrice $=$ float$($input$())$

while inPrice $<0$:

print$("---------")$

print$("$Subtotal:$$"+$ toFixed$($subTotal$,2))$

print$("$Enter prices:$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t or $-1$ for subtotal $\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t$\backslash$t or $0$ for total:"$)$

inPrice $=$ float$($input$())$

print$("$Total:$"+$ subTotal$)$

print$("$Coupon Menu:"$)$

print$("0$:No Discount"$)$

print$("1$:$5\%$ Discount"$)$

print$("2$:$10\%$ Discount"$)$

print$("3$: $15\%$ Discount"$)$

print$("4$: $20\%$ Discount"$)$

print$("$Coupon choice:"$)$

menuOption $=$ input$()$

while menuOption $!="0"$ and menuOption $!="1"$ and menuOption $!="2"$ and menuOption $!="3"$ and menuOption $!="4"$:

print$("$Invalid$.$ Enter Coupon menu option:"$)$

menuOption $=$ input$()$

if menuOption $=="0"$:

discountPercent $=0$

if menuOption $=="1"$:

discountPercent $=0\mathrm{.}05$

if menuOption $=="2"$:

discountPercent $=0\mathrm{.}1$

if menuOption $=="3"$:

discountPercent $=0\mathrm{.}15$

if menuOption $=="4"$:

discountPercent $=0\mathrm{.}2$

discountAmount $=$ subTotal $*$ discountPercent

discountedSubTotal $=$ subTotal $-$ discountAmount

if menuOption $=="0"$:

print$("$Sales Tax:$$"+$ toFixed$($subTotal $*$ tAXRATE,$2))$

print$("$Final Total:" $+$ toFixed$($subTotal $+$ subTotal $*$ tAXRATE,$2))$

else:

print$($discountPercent $*100+"\%"+$ "Discount:$$"+$ toFixed$($discountAmount$,2))$

print$("$Subtotal After Disc:$$"+$ toFixed$($discountedSubTotal$,2))$

print$("$Sales Tax: $$"+$ toFixed$($discountedSubTotal $*$ tAXRATE,$2))$

print$("----------")$

print$("$Final Total:$$"+$ toFixed$($discountedSubTotal $+$ discountedSubTotal $*$ tAXRATE,$2))$

should look something like:

Enter prices:

or $-1$ for subtotal

or $0$ for total:

$$1\mathrm{.}23$

$$5$

$$89\mathrm{.}15$

$$-1$

$-------------$

Subtotal:$$95\mathrm{.}38$

Enter prices:

or $-1$ for subtotal

or $0$ for total:

$$\mathrm{.}90$

$$-1$

$-----$

Subtotal: $$96\mathrm{.}28$

Enter prices:

or $-1$ fpr subtotal

or $0$ for total:

$$0$

$$96\mathrm{.}28$

Coupon Menu:

$0$: No Discount

$1$: $5\%$ Discount

$2$: $10\%$ Discount

$3$:$15\%$ Discount

$4$: $20\%$ Discount

Coupon choice: $5$

Invalid. enter coupon menu option:

$1$

$5\%$ Discount: $$4\mathrm{.}81$

Subtotal after discount:$$91\mathrm{.}47$

Sales Tax: $$5\mathrm{.}49$

$---------$

Final Total: $$96\mathrm{.}95$