251616 divided by 51 
We want to figure out the number of times 251616 can be divided by 51.

Moving on to step 1:
2 divided by 51 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 51

Moving on to step 2:
51 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
Subtracting 0 from 25 leaves us with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 51

Going ahead to step 3:
51 can be fit into 251 4 times, resulting in a remainder of 47.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 204 from 251 to get 47.
Fetch the next digit (6) from the dividend, attach it to 47 and continue: 476 / 51

Moving on to step 4:
If we divide 476 by 51, we get 9 and a remainder of 17.
Write down 9 as next digit of the result. 
Result so far: 49.0
Deduct 459 from 476 and we're left with 17.
Bring next digit (1) of the dividend behind the 17 and repeat the process: 171 / 51

Step 5:
The number 51 fits into 171 3 times, leaving a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 493.0
Subtracting 153 from 171 leaves us with 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 51

Going ahead to step 6:
The number 51 fits into 186 3 times, leaving a remainder of 33.
Put 3 as the next digit of the answer. 
Result so far: 4933.0
The remainder is 33 after subtracting 153 from 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 7:
When dividing 330 by 51, we get 6 with a remainder of 24.
Record the quotient 6 as the next digit in the result. 
Result so far: 4933.6
Subtracting 306 from 330 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 8:
240 divided by 51 is 4 with a remainder of 36.
The next digit of our result is 4. 
Result so far: 4933.64
If we subtract 204 from 240, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
51 can be fit into 360 7 times, resulting in a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 4933.647
Subtracting 357 from 360 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 10:
30 divided by 51 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 4933.647
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 11:
When dividing 300 by 51, we get 5 with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 4933.64705
If we take 255 away from 300, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 12:
The number 51 fits into 450 8 times, leaving a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 4933.647058
Subtracting 408 from 450 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 13:
When dividing 420 by 51, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 4933.6470588
If we subtract 408 from 420, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 4933.6470588 and a remainder of 1.2e-07.