Taksirlah hasil perkalian dan pembagian pecahan tersebut

a. 4 1/4 × 3 3/4 = 17/4 × 15/4 = 255/16 = 15 15/16

b. 3 4/5 × 1 1/6 = 19/5 × 7/6 = 133/30 = 4 2/5

c. 5 4/5 ÷ 3 1/6 = 29/5 × 6/19 = 174/95 = 1 79/95