51408026 divided by 515 
The aim is to understand the frequency of 515 in 51408026.

Step 1:
515 goes into 5 0 times with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 515

Going ahead to step 2:
515 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Bring next digit (4) of the dividend behind the 51 and repeat the process: 514 / 515

Step 3:
514 divided by 515 is 0 with a remainder of 514.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 514, we end up with 514.
Append the next digit (0) from the dividend to 514 and continue with: 5140 / 515

Let's proceed to step 4:
The number 515 fits into 5140 9 times, leaving a remainder of 505.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Deduct 4635 from 5140 and we're left with 505.
Take the next digit (8) from the dividend and append it to 505, then repeat: 5058 / 515

Advancing to step 5:
If we divide 5058 by 515, we get 9 and a remainder of 423.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
If we subtract 4635 from 5058, we get 423.
Bring next digit (0) of the dividend behind the 423 and repeat the process: 4230 / 515

Moving on to step 6:
4230 divided by 515 is 8 with a remainder of 110.
Put 8 as the next digit of the answer. 
Result so far: 998.0
If we subtract 4120 from 4230, we get 110.
Append the next digit (2) from the dividend to 110 and continue with: 1102 / 515

Moving on to step 7:
The number 515 fits into 1102 2 times, leaving a remainder of 72.
Record the quotient 2 as the next digit in the result. 
Result so far: 9982.0
If we subtract 1030 from 1102, we get 72.
Take the next digit (6) from the dividend and append it to 72, then repeat: 726 / 515

Moving on to step 8:
When dividing 726 by 515, we get 1 with a remainder of 211.
Use 1 as the next digit of our solution. 
Result so far: 99821.0
Subtract 515 from 726 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Moving on to step 9:
515 goes into 2110 4 times with a remainder of 50.
Put 4 as the next digit of the answer. 
Result so far: 99821.4
Deduct 2060 from 2110 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 10:
When dividing 500 by 515, we get 0 with a remainder of 500.
Write down 0 as next digit of the result. 
Result so far: 99821.4
If we take 0 away from 500, we end up with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Advancing to step 11:
When dividing 5000 by 515, we get 9 with a remainder of 365.
The next digit of our result is 9. 
Result so far: 99821.409
Subtract 4635 from 5000 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

On to step 12:
The number 515 fits into 3650 7 times, leaving a remainder of 45.
The number 7 becomes the next digit in our result. 
Result so far: 99821.4097
Deduct 3605 from 3650 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

On to step 13:
If we divide 450 by 515, we get 0 and a remainder of 450.
Put 0 as the next digit of the answer. 
Result so far: 99821.4097
Subtracting 0 from 450 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Moving on to step 14:
515 can be fit into 4500 8 times, resulting in a remainder of 380.
Record the quotient 8 as the next digit in the result. 
Result so far: 99821.409708
Subtract 4120 from 4500 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 15:
When dividing 3800 by 515, we get 7 with a remainder of 195.
Write down 7 as next digit of the result. 
Result so far: 99821.4097087
Deduct 3605 from 3800 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

On to step 16:
When dividing 1950 by 515, we get 3 with a remainder of 405.
Put 3 as the next digit of the answer. 
Result so far: 99821.40970873
Subtract 1545 from 1950 to get 405.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4050, and continue the process.

Our division results in 99821.40970873 with a remaining 4.05e-07.