25157311 divided by 987 
We want to figure out the number of times 25157311 can be divided by 987.

Step 1:
The number 987 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 987

Step 2:
987 can be fit into 25 0 times, resulting in a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Fetch the next digit (1) from the dividend, attach it to 25 and continue: 251 / 987

Going ahead to step 3:
987 goes into 251 0 times with a remainder of 251.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 251 and we're left with 251.
Fetch the next digit (5) from the dividend, attach it to 251 and continue: 2515 / 987

Advancing to step 4:
987 can be fit into 2515 2 times, resulting in a remainder of 541.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 1974 from 2515 to get 541.
Include the next digit (7) from the dividend after 541, then repeat: 5417 / 987

Let's proceed to step 5:
5417 divided by 987 is 5 with a remainder of 482.
Write down 5 as next digit of the result. 
Result so far: 25.0
Deduct 4935 from 5417 and we're left with 482.
Append the next digit (3) from the dividend to 482 and continue with: 4823 / 987

Going ahead to step 6:
The number 987 fits into 4823 4 times, leaving a remainder of 875.
Write down 4 as next digit of the result. 
Result so far: 254.0
Subtracting 3948 from 4823 leaves us with 875.
Grab the next digit (1) from the dividend, add it to 875, then carry on: 8751 / 987

Advancing to step 7:
987 goes into 8751 8 times with a remainder of 855.
Put 8 as the next digit of the answer. 
Result so far: 2548.0
Subtract 7896 from 8751 to get 855.
Take the next digit (1) from the dividend and append it to 855, then repeat: 8551 / 987

Going ahead to step 8:
The number 987 fits into 8551 8 times, leaving a remainder of 655.
Record the quotient 8 as the next digit in the result. 
Result so far: 25488.0
Subtract 7896 from 8551 to get 655.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Going ahead to step 9:
If we divide 6550 by 987, we get 6 and a remainder of 628.
Record the quotient 6 as the next digit in the result. 
Result so far: 25488.6
Subtract 5922 from 6550 to get 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Step 10:
987 can be fit into 6280 6 times, resulting in a remainder of 358.
The next digit of our result is 6. 
Result so far: 25488.66
If we take 5922 away from 6280, we end up with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

After the division, we end up with 25488.66 and a remainder of 0.358.