When dividing a fraction by a fraction you follow these steps:
ORIGINAL PROBLEM: 1/9 ÷ 1/3 = FLIP and CHANGE OPERATOR: 1/9 * 3/1 = MULTIPLY: 1/3 * 1/1 = 1/3
ORIGINAL PROBLEM: 1/6 ÷ 1/4 = FLIP and CHANGE OPERATOR: 1/6 * 4/1 = REDUCE (if possible): 1/3 * 2/1 = MULTIPLY: 1/3 * 2/1 = 2/3
Now you get to try a few for yourself.