To divide by a fraction you need to multiply by the reciprocal. In this case, 2/5 divided by 7/10 is the same as 2/5 times 10/7.
10
28 / 7 + 2 * 3 = 4 + 6 = 10.
7 divided by 13 times 2 divided by 3 is 14/39
10
10
3 times 10 to the 8th power divided by 7 times 10 to the negative 7th power equates to: 4.28571428571
2
10/7 ÷ 2 = 5/7
7/10 ÷ 2 = 7/20
7/10 divided by 1/2 is the same as 7/10 multiplied by 2 which is 14/10 or 7/5.
Division of fractions is easy - just turn the second one upside down and multiply.So 2 / 5 divided by 4 / 7is equivalent to 2 / 5 times 7 / 4which is equivalent to (2 times 7) / (5 times 4)= 14 / 20 = 7 / 10