1 4/5 + 17 3/20
⚠ 1 4/5 is read as the mixed number 1 + 4/5
⚠ 17 3/20 is read as the mixed number 17 + 3/20
Let's evaluate: 1 + 45 + 17 + 320
ℹ1 + 17 = 18‖45 + 320 = 4×4 + 320
18 + 4×4 + 320
ℹ4×4 = 16
18 + 16 + 320
▶Result:   18 1920
The approximate value of: 18 + 1920 equals:
18 + 0.95
▷ 18.95