>>> (0.5+2*3)*125-11/12*3*(-7)*2/(3*(3.7+4.3))*6

822.125

>>> 2**(3*4-10)+16*(1-1/2)**(3.5-2*1/4)

6.0

>>> 3.2/2-3*(7-2*3)/6*(9-19/2)/(1+2+3)*3

1.725