Explanation:
4 1/8 ÷ 2 1/4
first we bring both parts into a form of full fractions (and not full units and parts).
and then we remember that dividing 2 fractions is the same as multiplying the first fraction by the upside-down version of the second fraction.
4 1/8 = 32/8 + 1/8 = 33/8
2 1/4 = 8/4 + 1/4 = 9/4
so, we have
33/8 ÷ 9/4 = 33/8 × 4/9 = (33×4) / (8×9) = 33 / (2×9) =
= 33/18 = 1 15/18 = 1 5/6