So the first answer you got right which is 4
And then for part b the answer would be 6
Then for part c the answer is 24...
And I got that answer by this formula when dividing a whole number my a fraction, the formula is same, change, change. And basically that means you keep 12 the same then you change the division sign to a multiplication sign and then you change the fraction by putting the numerator at the bottom and the denominator at the top