kak tolong caranya..?

[tex]54 \div 3 \frac{3}{5} \\ = 54 \div \frac{18}{5} \\ = 54 \times \frac{5}{18 } \\ = 3 \times 5 = 15 \: \: hari[/tex]

3 3/5
18/5
54:18/5
54 × 5/18
3×5
15 hari