1. 11/3 × 5/4 ÷ 1/5
= 11/3 × 5/4 × 1/5
= 11/3 × 5/4 × 5/1
= 11 × 5 × 5/3 × 4 × 1
= 55 × 5/12 × 1
= 275/12
= 22 11/12
2. 9/4 ÷ 3/5 × 4
= 9/4 × 3/5 × 4/1
= 9/4 × 5/3 × 4/1
= 9 × 5 × 4/4 × 3 × 1
= 45 × 4/12 × 1
= 180/12
= 15
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1. 11/3 × 5/4 ÷ 1/5
= 11/3 × 5/4 × 1/5
= 11/3 × 5/4 × 5/1
= 11 × 5 × 5/3 × 4 × 1
= 55 × 5/12 × 1
= 275/12
= 22 11/12
2. 9/4 ÷ 3/5 × 4
= 9/4 × 3/5 × 4/1
= 9/4 × 5/3 × 4/1
= 9 × 5 × 4/4 × 3 × 1
= 45 × 4/12 × 1
= 180/12
= 15