"Divided of" can be misinterpreted and should be avoided. 1/3 of 15 is 5 1/3 divided by 15 is 1/45
90
15
1 Remandor(R)6 1 R6
6
fifteen
1 and 4 fifths divided by 1 third = 52/5
8 and 1 third divided by 3 = 27/9
99
One third divided by two and one third = 1/7
Add negative eleven to negative four and one third to obtain negative fifteen and one third: (-11) + (-4 1/3) = -15 1/3
4 divided buy 1 third simplified = 4