251001 divided by 51 
Let's see how many times 51 fits into 251001.

Step 1:
The number 51 fits into 2 0 times, leaving 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

Advancing to step 2:
If we divide 25 by 51, we get 0 and a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 25 and we're left with 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 51

Advancing to step 3:
51 can be fit into 251 4 times, resulting in a remainder of 47.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 204 from 251 to get 47.
Take the next digit (0) from the dividend and append it to 47, then repeat: 470 / 51

Step 4:
51 goes into 470 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
If we take 459 away from 470, we end up with 11.
Include the next digit (0) from the dividend after 11, then repeat: 110 / 51

Moving on to step 5:
51 goes into 110 2 times with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 492.0
The remainder is 8 after subtracting 102 from 110.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 51

On to step 6:
If we divide 81 by 51, we get 1 and a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 4921.0
The remainder is 30 after subtracting 51 from 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 7:
The number 51 fits into 300 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 4921.5
Subtracting 255 from 300 leaves us 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.

Advancing to step 8:
51 goes into 450 8 times with a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 4921.58
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.

Step 9:
51 goes into 420 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 4921.588
Deduct 408 from 420 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 4921.588 with a remainder of 0.0012.