5/6-9/13
Let's evaluate: 56 -913
5×13 -9×66×13
ℹ5×13 = 65‖-9×6 = -54‖6×13 = 78
65 -5478
ℹ65 -54 = 11
▶Result:   1178
The approximate value of: 1178 is:
▷ ≈ 0.1410