25624215 divided by 357 
The aim is to understand the frequency of 357 in 25624215.

Step 1:
If we divide 2 by 357, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 357

Advancing to step 2:
The number 357 fits into 25 0 times, leaving a remainder of 25.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Grab the next digit (6) from the dividend, add it to 25, then carry on: 256 / 357

Moving on to step 3:
When dividing 256 by 357, we get 0 with a remainder of 256.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 256 and we're left with 256.
Fetch the next digit (2) from the dividend, attach it to 256 and continue: 2562 / 357

On to step 4:
If we divide 2562 by 357, we get 7 and a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 2499 from 2562 to get 63.
Append the next digit (4) from the dividend to 63 and continue with: 634 / 357

On to step 5:
When dividing 634 by 357, we get 1 with a remainder of 277.
The next digit of our result is 1. 
Result so far: 71.0
The remainder is 277 after subtracting 357 from 634.
Grab the next digit (2) from the dividend, add it to 277, then carry on: 2772 / 357

Advancing to step 6:
2772 divided by 357 is 7 with a remainder of 273.
The number 7 becomes the next digit in our result. 
Result so far: 717.0
Subtracting 2499 from 2772 leaves us with 273.
Bring next digit (1) of the dividend behind the 273 and repeat the process: 2731 / 357

Going ahead to step 7:
When dividing 2731 by 357, we get 7 with a remainder of 232.
Record the quotient 7 as the next digit in the result. 
Result so far: 7177.0
Subtract 2499 from 2731 to get 232.
Take the next digit (5) from the dividend and append it to 232, then repeat: 2325 / 357

Moving on to step 8:
The number 357 fits into 2325 6 times, leaving a remainder of 183.
Use 6 as the next digit of our solution. 
Result so far: 71776.0
If we subtract 2142 from 2325, we get 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Going ahead to step 9:
357 can be fit into 1830 5 times, resulting in a remainder of 45.
The number 5 becomes the next digit in our result. 
Result so far: 71776.5
The remainder is 45 after subtracting 1785 from 1830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 10:
If we divide 450 by 357, we get 1 and a remainder of 93.
The number 1 becomes the next digit in our result. 
Result so far: 71776.51
If we take 357 away from 450, we end up with 93.
Since there are no more digits in the dividend, we add a zero to the remainder making it 930, and continue the process.

Moving on to step 11:
357 can be fit into 930 2 times, resulting in a remainder of 216.
Record the quotient 2 as the next digit in the result. 
Result so far: 71776.512
Deduct 714 from 930 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

On to step 12:
When dividing 2160 by 357, we get 6 with a remainder of 18.
The number 6 becomes the next digit in our result. 
Result so far: 71776.5126
Subtract 2142 from 2160 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 13:
If we divide 180 by 357, we get 0 and a remainder of 180.
Put 0 as the next digit of the answer. 
Result so far: 71776.5126
If we take 0 away from 180, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 14:
When dividing 1800 by 357, we get 5 with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 71776.512605
The remainder is 15 after subtracting 1785 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 15:
357 can be fit into 150 0 times, resulting in a remainder of 150.
Write down 0 as next digit of the result. 
Result so far: 71776.512605
If we subtract 0 from 150, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Advancing to step 16:
357 can be fit into 1500 4 times, resulting in a remainder of 72.
Record the quotient 4 as the next digit in the result. 
Result so far: 71776.51260504
Subtract 1428 from 1500 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

The final outcome is 71776.51260504, with a leftover of 7.2e-08.