7/9-1/12
Let's evaluate: 79 -112
7×4 -1×39×4
ℹ7×4 = 28‖-1×3 = -3‖9×4 = 36
28 -336
ℹ28 -3 = 25
▶Result:   2536
The approximate value of: 2536 equals:
▷ ≈ 0.6944