Let's divide 21665019 by 613
The aim is to understand the frequency of 613 in 21665019.

Step 1:
If we divide 2 by 613, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 613

On to step 2:
The number 613 fits into 21 0 times, leaving a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 613

On to step 3:
If we divide 216 by 613, we get 0 and a remainder of 216.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 216 to get 216.
Fetch the next digit (6) from the dividend, attach it to 216 and continue: 2166 / 613

Step 4:
The number 613 fits into 2166 3 times, leaving a remainder of 327.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 1839 from 2166 and we're left with 327.
Append the next digit (5) from the dividend to 327 and continue with: 3275 / 613

On to step 5:
When dividing 3275 by 613, we get 5 with a remainder of 210.
The number 5 becomes the next digit in our result. 
Result so far: 35.0
If we subtract 3065 from 3275, we get 210.
Include the next digit (0) from the dividend after 210, then repeat: 2100 / 613

Let's proceed to step 6:
If we divide 2100 by 613, we get 3 and a remainder of 261.
Put 3 as the next digit of the answer. 
Result so far: 353.0
If we subtract 1839 from 2100, we get 261.
Take the next digit (1) from the dividend and append it to 261, then repeat: 2611 / 613

Let's proceed to step 7:
The number 613 fits into 2611 4 times, leaving a remainder of 159.
Record the quotient 4 as the next digit in the result. 
Result so far: 3534.0
The remainder is 159 after subtracting 2452 from 2611.
Grab the next digit (9) from the dividend, add it to 159, then carry on: 1599 / 613

On to step 8:
1599 divided by 613 is 2 with a remainder of 373.
The next digit of our result is 2. 
Result so far: 35342.0
Deduct 1226 from 1599 and we're left with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

Moving on to step 9:
If we divide 3730 by 613, we get 6 and a remainder of 52.
Write down 6 as next digit of the result. 
Result so far: 35342.6
If we subtract 3678 from 3730, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 10:
613 can be fit into 520 0 times, resulting in a remainder of 520.
The number 0 becomes the next digit in our result. 
Result so far: 35342.6
Subtracting 0 from 520 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 11:
If we divide 5200 by 613, we get 8 and a remainder of 296.
The number 8 becomes the next digit in our result. 
Result so far: 35342.608
Subtracting 4904 from 5200 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 12:
613 goes into 2960 4 times with a remainder of 508.
Record the quotient 4 as the next digit in the result. 
Result so far: 35342.6084
Subtract 2452 from 2960 to get 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Let's proceed to step 13:
When dividing 5080 by 613, we get 8 with a remainder of 176.
Record the quotient 8 as the next digit in the result. 
Result so far: 35342.60848
Subtract 4904 from 5080 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 14:
613 can be fit into 1760 2 times, resulting in a remainder of 534.
Put 2 as the next digit of the answer. 
Result so far: 35342.608482
Deduct 1226 from 1760 and we're left with 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Step 15:
5340 divided by 613 is 8 with a remainder of 436.
Record the quotient 8 as the next digit in the result. 
Result so far: 35342.6084828
Deduct 4904 from 5340 and we're left with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Let's proceed to step 16:
When dividing 4360 by 613, we get 7 with a remainder of 69.
Use 7 as the next digit of our solution. 
Result so far: 35342.60848287
The remainder is 69 after subtracting 4291 from 4360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

After the division, we end up with 35342.60848287 and a remainder of 6.9e-08.