import math_lib as ml

print('add 3 and 5')
print(ml.add(3,5))

print('subtract 12 from  34')
print(ml.sub(34,12))

print('multiply 2 and 90')
print(ml.mult(2,90))

print('divide 18 by 3')
print(ml.div(18,3))

print('divide 37 by 0')
print(ml.div(37,0))