Your younger brother is 1.1 meters (m) taller, you are 0.2 meters (m) taller than your younger brother, and your older brother is 1/10 meter (m) taller than you. How tall is your brother in meters (m)?
0.2 1.1 [OP_ADD] 1/10 [OP_ADD]
var_a = 0.2
var_b = 1.1
var_c = var_a + var_b
var_d = 0.1
var_e = var_c + var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))