Let's divide 72521589 by 615
The aim is to understand the frequency of 615 in 72521589.

Moving on to step 1:
615 goes into 7 0 times with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 615

Step 2:
615 goes into 72 0 times with a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Append the next digit (5) from the dividend to 72 and continue with: 725 / 615

Let's proceed to step 3:
The number 615 fits into 725 1 times, leaving a remainder of 110.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 615 away from 725, we end up with 110.
Bring next digit (2) of the dividend behind the 110 and repeat the process: 1102 / 615

Going ahead to step 4:
1102 divided by 615 is 1 with a remainder of 487.
Use 1 as the next digit of our solution. 
Result so far: 11.0
The remainder is 487 after subtracting 615 from 1102.
Take the next digit (1) from the dividend and append it to 487, then repeat: 4871 / 615

Step 5:
When dividing 4871 by 615, we get 7 with a remainder of 566.
Record the quotient 7 as the next digit in the result. 
Result so far: 117.0
If we subtract 4305 from 4871, we get 566.
Grab the next digit (5) from the dividend, add it to 566, then carry on: 5665 / 615

Advancing to step 6:
615 can be fit into 5665 9 times, resulting in a remainder of 130.
Write down 9 as next digit of the result. 
Result so far: 1179.0
Deduct 5535 from 5665 and we're left with 130.
Append the next digit (8) from the dividend to 130 and continue with: 1308 / 615

Going ahead to step 7:
615 can be fit into 1308 2 times, resulting in a remainder of 78.
Use 2 as the next digit of our solution. 
Result so far: 11792.0
Deduct 1230 from 1308 and we're left with 78.
Fetch the next digit (9) from the dividend, attach it to 78 and continue: 789 / 615

Moving on to step 8:
The number 615 fits into 789 1 times, leaving a remainder of 174.
The number 1 becomes the next digit in our result. 
Result so far: 117921.0
Subtracting 615 from 789 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Advancing to step 9:
If we divide 1740 by 615, we get 2 and a remainder of 510.
Record the quotient 2 as the next digit in the result. 
Result so far: 117921.2
Subtracting 1230 from 1740 leaves us with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Advancing to step 10:
5100 divided by 615 is 8 with a remainder of 180.
Put 8 as the next digit of the answer. 
Result so far: 117921.28
Subtract 4920 from 5100 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 11:
If we divide 1800 by 615, we get 2 and a remainder of 570.
The number 2 becomes the next digit in our result. 
Result so far: 117921.282
If we subtract 1230 from 1800, we get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Going ahead to step 12:
The number 615 fits into 5700 9 times, leaving a remainder of 165.
Put 9 as the next digit of the answer. 
Result so far: 117921.2829
If we take 5535 away from 5700, we end up with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

On to step 13:
The number 615 fits into 1650 2 times, leaving a remainder of 420.
The number 2 becomes the next digit in our result. 
Result so far: 117921.28292
Subtracting 1230 from 1650 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Step 14:
615 can be fit into 4200 6 times, resulting in a remainder of 510.
Record the quotient 6 as the next digit in the result. 
Result so far: 117921.282926
If we take 3690 away from 4200, we end up with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

On to step 15:
615 can be fit into 5100 8 times, resulting in a remainder of 180.
Use 8 as the next digit of our solution. 
Result so far: 117921.2829268
The remainder is 180 after subtracting 4920 from 5100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 16:
1800 divided by 615 is 2 with a remainder of 570.
Write down 2 as next digit of the result. 
Result so far: 117921.28292682
Deduct 1230 from 1800 and we're left with 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

Our division results in 117921.28292682 with a remaining 5.7e-07.