Let's divide 64920888 by 515
The aim is to understand the frequency of 515 in 64920888.

Going ahead to step 1:
515 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 515

Let's proceed to step 2:
515 can be fit into 64 0 times, resulting in a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Append the next digit (9) from the dividend to 64 and continue with: 649 / 515

Moving on to step 3:
649 divided by 515 is 1 with a remainder of 134.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 134 after subtracting 515 from 649.
Bring next digit (2) of the dividend behind the 134 and repeat the process: 1342 / 515

Going ahead to step 4:
1342 divided by 515 is 2 with a remainder of 312.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 1030 from 1342, we get 312.
Take the next digit (0) from the dividend and append it to 312, then repeat: 3120 / 515

Going ahead to step 5:
When dividing 3120 by 515, we get 6 with a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 126.0
The remainder is 30 after subtracting 3090 from 3120.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 515

Let's proceed to step 6:
If we divide 308 by 515, we get 0 and a remainder of 308.
Record the quotient 0 as the next digit in the result. 
Result so far: 1260.0
Subtracting 0 from 308 leaves us with 308.
Grab the next digit (8) from the dividend, add it to 308, then carry on: 3088 / 515

Going ahead to step 7:
515 can be fit into 3088 5 times, resulting in a remainder of 513.
Use 5 as the next digit of our solution. 
Result so far: 12605.0
Subtract 2575 from 3088 to get 513.
Append the next digit (8) from the dividend to 513 and continue with: 5138 / 515

Going ahead to step 8:
If we divide 5138 by 515, we get 9 and a remainder of 503.
Record the quotient 9 as the next digit in the result. 
Result so far: 126059.0
The remainder is 503 after subtracting 4635 from 5138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Moving on to step 9:
The number 515 fits into 5030 9 times, leaving a remainder of 395.
The next digit of our result is 9. 
Result so far: 126059.9
The remainder is 395 after subtracting 4635 from 5030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3950, and continue the process.

On to step 10:
If we divide 3950 by 515, we get 7 and a remainder of 345.
Record the quotient 7 as the next digit in the result. 
Result so far: 126059.97
Subtracting 3605 from 3950 leaves us with 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

Step 11:
If we divide 3450 by 515, we get 6 and a remainder of 360.
Write down 6 as next digit of the result. 
Result so far: 126059.976
If we subtract 3090 from 3450, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 12:
If we divide 3600 by 515, we get 6 and a remainder of 510.
Put 6 as the next digit of the answer. 
Result so far: 126059.9766
Deduct 3090 from 3600 and we're left 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.

After the division, we end up with 126059.9766 and a remainder of 0.0051.