Problem: if 20 men can build a wall 66 metres long in 10 days , what length of a similar can be built by 86 men in 8 days ?
Rationale: "if 20 men can build a wall 66 metres long in 10 days , length of a similar wall that can be built by 86 men in 8 days = ( 66 * 86 * 8 ) / ( 10 * 20 ) = 227.04 mtrs answer : a"
annotated_formula: multiply(66, divide(multiply(86, 8), multiply(20, 10)))