how can i fix my code to output $($I cant use the multiplication function$)$

Feed me $4$ hex digits: $1240$

$1$ $$1$ item

$1$ $$2$ item

$1$ $$3$ item

$0$ $$4$ item

$0$ $$5$ item

Total Order Costs: $$6$

and

Feed me $4$ hex digits: $76$C$9$

$7$ $$1$ item

$3$ $$2$ item

$3$ $$3$ item

$1$ $$4$ item

$1$ $$5$ item

Total Order Costs: $$31$

when i input $1240$ i get

Feed me $4$ hex digits: $1240$

$0000\_0008$ $$1$ item

$0000\_000$C $$2$ item

$0000\_0004$ $$3$ item

$0000\_0000$ $$4$ item

$0000\_0000$ $$5$ item

Total Order Costs: $$8$

and when i input $76$C$9$ i get a conversion error

program DollarValueMenu;

#include$($ "stdlib.hhf$")$;

static

inputValue: int$32$;

totalCost: int$32$;

begin DollarValueMenu;

$//$ Function to prompt for and read the input value

stdout.put$($ "Feed me $4$ hex digits: $")$;

stdin.get$($ inputValue $)$;

$//$ Extract number of items for each dollar value

mov$($ inputValue, ebx $)$; $//$ Use ebx to hold the input value

$//$ Extract $$1$ items $($first hex digit$)$

mov$($ ebx, eax $)$; $//$ Move input value to eax for easier manipulation

and$(14,$ eax $)$; $//$ Mask the first hex digit

stdout.put$($ eax, $"$ $$1$ item" $)$;

stdout.newln$()$;

$//$ Extract $$2$ items $($second hex digit$)$

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

mov$($ ebx, eax $)$; $//$ Move input value to eax for easier manipulation

and$(14,$ eax $)$; $//$ Mask the second hex digit

stdout.put$($ eax, $"$ $$2$ item" $)$;

stdout.newln$()$;

$//$ Extract $$3$ items $($third hex digit$)$

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

mov$($ ebx, eax $)$; $//$ Move input value to eax for easier manipulation

and$(14,$ eax $)$; $//$ Mask the third hex digit

stdout.put$($ eax, $"$ $$3$ item" $)$;

stdout.newln$()$;

$//$ Extract $$4$ items $($fourth hex digit$)$

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

mov$($ ebx, eax $)$; $//$ Move input value to eax for easier manipulation

and$(14,$ eax $)$; $//$ Mask the fourth hex digit

stdout.put$($ eax, $"$ $$4$ item" $)$;

stdout.newln$()$;

$//$ Remaining bits in ebx are for $$5$ items

and$(14,$ ebx $)$; $//$ Mask the remaining hex digit

stdout.put$($ ebx, $"$ $$5$ item" $)$;

stdout.newln$()$;

$//$ Calculate total cost

mov$(0,$ totalCost $)$; $//$ Initialize total cost to $0$

mov$($ inputValue, ebx $)$; $//$ Reload ebx with input value

$//$ Calculate total cost for $$1$ items

and$(14,$ ebx $)$; $//$ Mask the first hex digit $($count for $$1$ items$)$

add$($ ebx, totalCost $)$; $//$ Add to total cost

$//$ Calculate total cost for $$2$ items

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

and$(14,$ ebx $)$; $//$ Mask the second hex digit $($count for $$2$ items$)$

shl$(1,$ ebx $)$; $//$ Multiply by $2($cost per item$)$

add$($ ebx, totalCost $)$; $//$ Add to total cost

$//$ Calculate total cost for $$3$ items

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

and$(14,$ ebx $)$; $//$ Mask the third hex digit $($count for $$3$ items$)$

shl$(1,$ ebx $)$; $//$ Multiply by $3($cost per item$)$

add$($ ebx, totalCost $)$; $//$ Add to total cost

$//$ Calculate total cost for $$4$ items

shr$(4,$ ebx $)$; $//$ Shift to next hex digit

and$(14,$ ebx $)$; $//$ Mask the fourth hex digit $($count for $$4$ items$)$

shl$(2,$ ebx $)$; $//$ Multiply by $4($cost per item$)$

add$($ ebx, totalCost $)$; $//$ Add to total cost

$//$ Calculate total cost for $$5$ items

and$(14,$ ebx $)$; $//$ Remaining bits are count for $$5$ items

shl$(2,$ ebx $)$; $//$ Multiply by $5($cost per item$)$

add$($ ebx, totalCost $)$; $//$ Add to total cost

$//$ Output the total order cost

stdout.put$($ "Total Order Costs: $$")$;

stdout.put$($ totalCost $)$;

stdout.newln$()$;

end DollarValueMenu;