191631 divided by 51 
We want to figure out the number of times 191631 can be divided by 51.

Step 1:
If we divide 1 by 51, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 51

Step 2:
51 can be fit into 19 0 times, resulting in a remainder of 19.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (1) from the dividend, attach it to 19 and continue: 191 / 51

Let's proceed to step 3:
191 divided by 51 is 3 with a remainder of 38.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 38 after subtracting 153 from 191.
Append the next digit (6) from the dividend to 38 and continue with: 386 / 51

Moving on to step 4:
386 divided by 51 is 7 with a remainder of 29.
Put 7 as the next digit of the answer. 
Result so far: 37.0
Subtract 357 from 386 to get 29.
Fetch the next digit (3) from the dividend, attach it to 29 and continue: 293 / 51

Going ahead to step 5:
If we divide 293 by 51, we get 5 and a remainder of 38.
Record the quotient 5 as the next digit in the result. 
Result so far: 375.0
If we subtract 255 from 293, we get 38.
Append the next digit (1) from the dividend to 38 and continue with: 381 / 51

On to step 6:
When dividing 381 by 51, we get 7 with a remainder of 24.
Write down 7 as next digit of the result. 
Result so far: 3757.0
If we take 357 away from 381, we end up 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.

Step 7:
240 divided by 51 is 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 3757.4
Subtracting 204 from 240 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
When dividing 360 by 51, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 3757.47
The remainder is 3 after subtracting 357 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 9:
When dividing 30 by 51, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 3757.47
Deduct 0 from 30 and we're left 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.

On to step 10:
51 can be fit into 300 5 times, resulting in a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 3757.4705
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.

Let's proceed to step 11:
51 can be fit into 450 8 times, resulting in a remainder of 42.
Put 8 as the next digit of the answer. 
Result so far: 3757.47058
If we subtract 408 from 450, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 12:
When dividing 420 by 51, we get 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 3757.470588
If we take 408 away from 420, we end up 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.

Our division results in 3757.470588 with a remaining 1.2e-06.