What is 21 divided by 1/3?
\(\frac { 21 }{ \frac { 1 }{ 3 } } \\ \\ =\frac { 21 }{ 1 } \cdot \frac { 3 }{ 1 } \\ \\ =63\)
21 : 1 ⇒ 21 x 3 ⇒ 63 ⇒ 63 3 1 1Solution: 63