the length of rectangle is thrice its breadth and its perimeter is 56 m , find the area of the rectangle ?
"2 ( 3 x + x ) = 56 l = 21 b = 7 lb = 21 * 7 = 147 answer : e"
multiply(multiply(divide(56, add(multiply(const_3, const_2), multiply(const_1, const_2))), const_3), divide(56, add(multiply(const_3, const_2), multiply(const_1, const_2))))