We're dividing 15913555 by 250 
The aim is to understand the frequency of 250 in 15913555.

Going ahead to step 1:
1 divided by 250 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 250

Step 2:
15 divided by 250 is 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (9) from the dividend after 15, then repeat: 159 / 250

Step 3:
250 can be fit into 159 0 times, resulting in a remainder of 159.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 159, we end up with 159.
Bring next digit (1) of the dividend behind the 159 and repeat the process: 1591 / 250

Going ahead to step 4:
The number 250 fits into 1591 6 times, leaving a remainder of 91.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 91 after subtracting 1500 from 1591.
Fetch the next digit (3) from the dividend, attach it to 91 and continue: 913 / 250

Advancing to step 5:
913 divided by 250 is 3 with a remainder of 163.
The number 3 becomes the next digit in our result. 
Result so far: 63.0
If we subtract 750 from 913, we get 163.
Include the next digit (5) from the dividend after 163, then repeat: 1635 / 250

Going ahead to step 6:
When dividing 1635 by 250, we get 6 with a remainder of 135.
Use 6 as the next digit of our solution. 
Result so far: 636.0
If we subtract 1500 from 1635, we get 135.
Grab the next digit (5) from the dividend, add it to 135, then carry on: 1355 / 250

Step 7:
1355 divided by 250 is 5 with a remainder of 105.
Record the quotient 5 as the next digit in the result. 
Result so far: 6365.0
The remainder is 105 after subtracting 1250 from 1355.
Take the next digit (5) from the dividend and append it to 105, then repeat: 1055 / 250

Step 8:
1055 divided by 250 is 4 with a remainder of 55.
Put 4 as the next digit of the answer. 
Result so far: 63654.0
Subtracting 1000 from 1055 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 9:
If we divide 550 by 250, we get 2 and a remainder of 50.
The next digit of our result is 2. 
Result so far: 63654.2
If we subtract 500 from 550, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
250 goes into 500 2 times with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 63654.22
Deduct 500 from 500 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 63654.22 and a remainder of 0.0.