$1.65($base $7)=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_($base $10)$

$2.364($base $10)=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_($base $7)($use Subtraction method$)$

$3.302($base $10)=\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_($base $5)($use division method$)$

$4.$ Convert $25\mathrm{.}8375$ to binary $($maximum of six places to the right of the binary point$)$

$5.$ Convert $10011\mathrm{.}11011$ to decimal

$6.$ Convert the hexadecimal number $3$AB$8($base $16)$ to binary $($Use the relationship between base $16$ and base $2$ numbers$)$