Represent Braille number in base-$60$

Represent Braille number in base-$60$

Multiply number using the visual multiplication method : $83\times 21$

Multiply number using the visual multiplication method : $49\times 16$

Multiply number using the visual multiplication method : $342\times 17$

Multiply number using the visual multiplication method : $121\times 213$

Represent base$10$ number in base-$60$

$81$

Represent base$10$ number in base-$60$

$200$

Represent base$10$ number in base-$60$

$372$