691307 divided by 51 
Let's see how many times 51 fits into 691307.

Step 1:
51 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 51

Advancing to step 2:
51 goes into 69 1 times with a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 51 away from 69, we end up with 18.
Bring next digit (1) of the dividend behind the 18 and repeat the process: 181 / 51

Step 3:
The number 51 fits into 181 3 times, leaving a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we subtract 153 from 181, we get 28.
Include the next digit (3) from the dividend after 28, then repeat: 283 / 51

Going ahead to step 4:
283 divided by 51 is 5 with a remainder of 28.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
If we subtract 255 from 283, we get 28.
Fetch the next digit (0) from the dividend, attach it to 28 and continue: 280 / 51

Moving on to step 5:
When dividing 280 by 51, we get 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 1355.0
If we take 255 away from 280, we end up with 25.
Bring next digit (7) of the dividend behind the 25 and repeat the process: 257 / 51

On to step 6:
When dividing 257 by 51, we get 5 with a remainder of 2.
The next digit of our result is 5. 
Result so far: 13555.0
If we subtract 255 from 257, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
51 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 13555.0
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
If we divide 200 by 51, we get 3 and a remainder of 47.
Write down 3 as next digit of the result. 
Result so far: 13555.03
If we subtract 153 from 200, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 9:
470 divided by 51 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 13555.039
Subtracting 459 from 470 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 10:
The number 51 fits into 110 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 13555.0392
Subtracting 102 from 110 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 11:
The number 51 fits into 80 1 times, leaving a remainder of 29.
Put 1 as the next digit of the answer. 
Result so far: 13555.03921
Deduct 51 from 80 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 12:
When dividing 290 by 51, we get 5 with a remainder of 35.
The next digit of our result is 5. 
Result so far: 13555.039215
The remainder is 35 after subtracting 255 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 13:
51 can be fit into 350 6 times, resulting in a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 13555.0392156
Deduct 306 from 350 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 14:
51 can be fit into 440 8 times, resulting in a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 13555.03921568
If we take 408 away from 440, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 13555.03921568, with a leftover of 3.2e-08.