Problem: a train running at the speed of 120 km / hr crosses a pole in 18 seconds . what is the length of the train ?
Rationale: "speed = ( 120 x ( 5 / 18 ) m / sec = ( 100 / 3 ) m / sec . length of the train = ( speed x time ) . length of the train = ( ( 100 / 3 ) x 18 ) m = 600 m e"
annotated_formula: multiply(divide(multiply(120, const_1000), const_3600), 18)