We're dividing 690644 by 51 
Let's see how many times 51 fits into 690644.

Going ahead to step 1:
51 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 51

Step 2:
The number 51 fits into 69 1 times, leaving a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 51 from 69 to get 18.
Fetch the next digit (0) from the dividend, attach it to 18 and continue: 180 / 51

Step 3:
51 goes into 180 3 times with a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 153 from 180 to get 27.
Fetch the next digit (6) from the dividend, attach it to 27 and continue: 276 / 51

Let's proceed to step 4:
If we divide 276 by 51, we get 5 and a remainder of 21.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
Deduct 255 from 276 and we're left with 21.
Bring next digit (4) of the dividend behind the 21 and repeat the process: 214 / 51

Moving on to step 5:
When dividing 214 by 51, we get 4 with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 1354.0
The remainder is 10 after subtracting 204 from 214.
Fetch the next digit (4) from the dividend, attach it to 10 and continue: 104 / 51

Advancing to step 6:
51 goes into 104 2 times with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 13542.0
If we subtract 102 from 104, 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 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 13542.0
Subtracting 0 from 20 leaves us 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:
200 divided by 51 is 3 with a remainder of 47.
The next digit of our result is 3. 
Result so far: 13542.03
If we take 153 away from 200, we end up with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 9:
470 divided by 51 is 9 with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 13542.039
If we take 459 away from 470, we end up 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.

Let's proceed to step 10:
51 goes into 110 2 times with a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 13542.0392
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.

Going ahead to step 11:
The number 51 fits into 80 1 times, leaving a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 13542.03921
If we subtract 51 from 80, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 12:
290 divided by 51 is 5 with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 13542.039215
Deduct 255 from 290 and we're left with 35.
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:
If we divide 350 by 51, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 13542.0392156
If we subtract 306 from 350, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 14:
51 goes into 440 8 times with a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 13542.03921568
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.

Our division results in 13542.03921568 with a remaining 3.2e-08.