90637306 ÷ 615 
The aim is to understand the frequency of 615 in 90637306.

Let's proceed to step 1:
615 can be fit into 9 0 times, resulting in a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 615

Moving on to step 2:
90 divided by 615 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Take the next digit (6) from the dividend and append it to 90, then repeat: 906 / 615

Advancing to step 3:
906 divided by 615 is 1 with a remainder of 291.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 615 from 906 and we're left with 291.
Append the next digit (3) from the dividend to 291 and continue with: 2913 / 615

Going ahead to step 4:
2913 divided by 615 is 4 with a remainder of 453.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 2460 from 2913, we get 453.
Include the next digit (7) from the dividend after 453, then repeat: 4537 / 615

Moving on to step 5:
When dividing 4537 by 615, we get 7 with a remainder of 232.
Put 7 as the next digit of the answer. 
Result so far: 147.0
Deduct 4305 from 4537 and we're left with 232.
Append the next digit (3) from the dividend to 232 and continue with: 2323 / 615

Step 6:
615 can be fit into 2323 3 times, resulting in a remainder of 478.
The number 3 becomes the next digit in our result. 
Result so far: 1473.0
Subtract 1845 from 2323 to get 478.
Take the next digit (0) from the dividend and append it to 478, then repeat: 4780 / 615

Moving on to step 7:
If we divide 4780 by 615, we get 7 and a remainder of 475.
The number 7 becomes the next digit in our result. 
Result so far: 14737.0
If we take 4305 away from 4780, we end up with 475.
Append the next digit (6) from the dividend to 475 and continue with: 4756 / 615

On to step 8:
615 goes into 4756 7 times with a remainder of 451.
Write down 7 as next digit of the result. 
Result so far: 147377.0
Subtract 4305 from 4756 to get 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Moving on to step 9:
The number 615 fits into 4510 7 times, leaving a remainder of 205.
The number 7 becomes the next digit in our result. 
Result so far: 147377.7
The remainder is 205 after subtracting 4305 from 4510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 10:
615 can be fit into 2050 3 times, resulting in a remainder of 205.
The number 3 becomes the next digit in our result. 
Result so far: 147377.73
Subtracting 1845 from 2050 leaves us with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 11:
615 goes into 2050 3 times with a remainder of 205.
The number 3 becomes the next digit in our result. 
Result so far: 147377.733
Subtracting 1845 from 2050 leaves us with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Our division results in 147377.733 with a remaining 0.0205.