Problem: if 12 men can reap 120 acres of land in 16 days , how many acres of land can 36 men reap in 32 days ?
Rationale: 12 men 120 acres 16 days 36 men ? 32 days 120 * 36 / 12 * 32 / 16 120 * 3 * 2 120 * 6 = 720 answer : d
annotated_formula: multiply(120, multiply(divide(36, 12), divide(32, 16)))