We look at the division of 3385725 by 751 
The aim is to understand the frequency of 751 in 3385725.

Advancing to step 1:
751 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 751

Advancing to step 2:
If we divide 33 by 751, we get 0 and a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 33, we get 33.
Grab the next digit (8) from the dividend, add it to 33, then carry on: 338 / 751

Moving on to step 3:
If we divide 338 by 751, we get 0 and a remainder of 338.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 338 to get 338.
Append the next digit (5) from the dividend to 338 and continue with: 3385 / 751

Advancing to step 4:
If we divide 3385 by 751, we get 4 and a remainder of 381.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 3004 from 3385, we get 381.
Bring next digit (7) of the dividend behind the 381 and repeat the process: 3817 / 751

Moving on to step 5:
751 can be fit into 3817 5 times, resulting in a remainder of 62.
Put 5 as the next digit of the answer. 
Result so far: 45.0
If we subtract 3755 from 3817, we get 62.
Grab the next digit (2) from the dividend, add it to 62, then carry on: 622 / 751

Moving on to step 6:
When dividing 622 by 751, we get 0 with a remainder of 622.
Use 0 as the next digit of our solution. 
Result so far: 450.0
Deduct 0 from 622 and we're left with 622.
Fetch the next digit (5) from the dividend, attach it to 622 and continue: 6225 / 751

On to step 7:
When dividing 6225 by 751, we get 8 with a remainder of 217.
The next digit of our result is 8. 
Result so far: 4508.0
If we take 6008 away from 6225, we end up with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Moving on to step 8:
2170 divided by 751 is 2 with a remainder of 668.
Write down 2 as next digit of the result. 
Result so far: 4508.2
The remainder is 668 after subtracting 1502 from 2170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6680, and continue the process.

On to step 9:
When dividing 6680 by 751, we get 8 with a remainder of 672.
Put 8 as the next digit of the answer. 
Result so far: 4508.28
Subtracting 6008 from 6680 leaves us with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Step 10:
751 can be fit into 6720 8 times, resulting in a remainder of 712.
Write down 8 as next digit of the result. 
Result so far: 4508.288
Deduct 6008 from 6720 and we're left with 712.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7120, and continue the process.

The final result is 4508.288 with a remainder of 0.0712.