15374021 divided by 251 
We want to figure out the number of times 15374021 can be divided by 251.

On to step 1:
The number 251 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 251

On to step 2:
When dividing 15 by 251, we get 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 15, we end up with 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 251

Advancing to step 3:
The number 251 fits into 153 0 times, leaving a remainder of 153.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 153 to get 153.
Bring next digit (7) of the dividend behind the 153 and repeat the process: 1537 / 251

Moving on to step 4:
251 goes into 1537 6 times with a remainder of 31.
The next digit of our result is 6. 
Result so far: 6.0
If we take 1506 away from 1537, we end up with 31.
Bring next digit (4) of the dividend behind the 31 and repeat the process: 314 / 251

Step 5:
251 goes into 314 1 times with a remainder of 63.
Use 1 as the next digit of our solution. 
Result so far: 61.0
Subtract 251 from 314 to get 63.
Bring next digit (0) of the dividend behind the 63 and repeat the process: 630 / 251

Step 6:
The number 251 fits into 630 2 times, leaving a remainder of 128.
The number 2 becomes the next digit in our result. 
Result so far: 612.0
Subtracting 502 from 630 leaves us with 128.
Bring next digit (2) of the dividend behind the 128 and repeat the process: 1282 / 251

Step 7:
When dividing 1282 by 251, we get 5 with a remainder of 27.
Use 5 as the next digit of our solution. 
Result so far: 6125.0
Subtract 1255 from 1282 to get 27.
Append the next digit (1) from the dividend to 27 and continue with: 271 / 251

Step 8:
251 goes into 271 1 times with a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 61251.0
The remainder is 20 after subtracting 251 from 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 9:
251 goes into 200 0 times with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 61251.0
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 10:
The number 251 fits into 2000 7 times, leaving a remainder of 243.
Put 7 as the next digit of the answer. 
Result so far: 61251.07
If we subtract 1757 from 2000, we get 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Advancing to step 11:
If we divide 2430 by 251, we get 9 and a remainder of 171.
The next digit of our result is 9. 
Result so far: 61251.079
If we subtract 2259 from 2430, we get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Going ahead to step 12:
The number 251 fits into 1710 6 times, leaving a remainder of 204.
Record the quotient 6 as the next digit in the result. 
Result so far: 61251.0796
Subtract 1506 from 1710 to get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Step 13:
The number 251 fits into 2040 8 times, leaving a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 61251.07968
Subtract 2008 from 2040 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
251 can be fit into 320 1 times, resulting in a remainder of 69.
Write down 1 as next digit of the result. 
Result so far: 61251.079681
Subtract 251 from 320 to get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Going ahead to step 15:
If we divide 690 by 251, we get 2 and a remainder of 188.
Put 2 as the next digit of the answer. 
Result so far: 61251.0796812
The remainder is 188 after subtracting 502 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 16:
1880 divided by 251 is 7 with a remainder of 123.
The number 7 becomes the next digit in our result. 
Result so far: 61251.07968127
Deduct 1757 from 1880 and we're left with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

The final result is 61251.07968127 with a remainder of 1.23e-07.