4/5-5/13
Let's evaluate: 45 -513
4×13 -5×55×13
ℹ4×13 = 52‖-5×5 = -25‖5×13 = 65
52 -2565
ℹ52 -25 = 27
▶Result:   2765
The approximate value of: 2765 equals:
▷ ≈ 0.4154