We look at the division of 25428916 by 763 
The aim is to understand the frequency of 763 in 25428916.

Going ahead to step 1:
If we divide 2 by 763, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (5) from the dividend to 2 and continue with: 25 / 763

Going ahead to step 2:
763 goes into 25 0 times with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Take the next digit (4) from the dividend and append it to 25, then repeat: 254 / 763

Step 3:
If we divide 254 by 763, we get 0 and a remainder of 254.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 254, we get 254.
Bring next digit (2) of the dividend behind the 254 and repeat the process: 2542 / 763

On to step 4:
When dividing 2542 by 763, we get 3 with a remainder of 253.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 2289 away from 2542, we end up with 253.
Grab the next digit (8) from the dividend, add it to 253, then carry on: 2538 / 763

Advancing to step 5:
When dividing 2538 by 763, we get 3 with a remainder of 249.
Write down 3 as next digit of the result. 
Result so far: 33.0
If we subtract 2289 from 2538, we get 249.
Grab the next digit (9) from the dividend, add it to 249, then carry on: 2499 / 763

Advancing to step 6:
763 can be fit into 2499 3 times, resulting in a remainder of 210.
Write down 3 as next digit of the result. 
Result so far: 333.0
If we subtract 2289 from 2499, we get 210.
Append the next digit (1) from the dividend to 210 and continue with: 2101 / 763

Step 7:
763 can be fit into 2101 2 times, resulting in a remainder of 575.
The next digit of our result is 2. 
Result so far: 3332.0
Subtracting 1526 from 2101 leaves us with 575.
Grab the next digit (6) from the dividend, add it to 575, then carry on: 5756 / 763

Step 8:
763 goes into 5756 7 times with a remainder of 415.
Put 7 as the next digit of the answer. 
Result so far: 33327.0
Deduct 5341 from 5756 and we're left with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Advancing to step 9:
763 can be fit into 4150 5 times, resulting in a remainder of 335.
Write down 5 as next digit of the result. 
Result so far: 33327.5
Deduct 3815 from 4150 and we're left with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Advancing to step 10:
The number 763 fits into 3350 4 times, leaving a remainder of 298.
The number 4 becomes the next digit in our result. 
Result so far: 33327.54
Deduct 3052 from 3350 and we're left with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

On to step 11:
2980 divided by 763 is 3 with a remainder of 691.
The number 3 becomes the next digit in our result. 
Result so far: 33327.543
If we take 2289 away from 2980, we end up with 691.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6910, and continue the process.

Advancing to step 12:
If we divide 6910 by 763, we get 9 and a remainder of 43.
The number 9 becomes the next digit in our result. 
Result so far: 33327.5439
The remainder is 43 after subtracting 6867 from 6910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 13:
The number 763 fits into 430 0 times, leaving a remainder of 430.
Put 0 as the next digit of the answer. 
Result so far: 33327.5439
Subtract 0 from 430 to get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Let's proceed to step 14:
If we divide 4300 by 763, we get 5 and a remainder of 485.
The next digit of our result is 5. 
Result so far: 33327.543905
The remainder is 485 after subtracting 3815 from 4300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Let's proceed to step 15:
When dividing 4850 by 763, we get 6 with a remainder of 272.
Put 6 as the next digit of the answer. 
Result so far: 33327.5439056
The remainder is 272 after subtracting 4578 from 4850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

On to step 16:
2720 divided by 763 is 3 with a remainder of 431.
Use 3 as the next digit of our solution. 
Result so far: 33327.54390563
Subtracting 2289 from 2720 leaves us with 431.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4310, and continue the process.

The final outcome is 33327.54390563, with a leftover of 4.31e-07.