Complete the following combination problems:

A. (17.390 - 9.39) / (8 + 97.413) = ?

B. (5 + 8) X (1.001 - 0.971) = ?

Extra Practice:

A. (8.8 - 0.80) / (4.0 + 7.00) = ?

B. (8.8 X 0.80) - (4.0 X 7.00) = ?