690594 divided by 51 
Our goal is to divide 690594 by 51.

Step 1:
When dividing 6 by 51, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 51

Advancing to step 2:
51 can be fit into 69 1 times, resulting in a remainder of 18.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 51 from 69 leaves us with 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 51

Advancing to step 3:
51 can be fit into 180 3 times, resulting in a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 153 away from 180, we end up with 27.
Append the next digit (5) from the dividend to 27 and continue with: 275 / 51

Moving on to step 4:
51 goes into 275 5 times with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 135.0
Subtracting 255 from 275 leaves us with 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 51

On to step 5:
If we divide 209 by 51, we get 4 and a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 1354.0
The remainder is 5 after subtracting 204 from 209.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 51

Going ahead to step 6:
51 goes into 54 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 13541.0
Subtract 51 from 54 to get 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 7:
When dividing 30 by 51, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 13541.0
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
If we divide 300 by 51, we get 5 and a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 13541.05
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 9:
51 can be fit into 450 8 times, resulting in a remainder of 42.
Use 8 as the next digit of our solution. 
Result so far: 13541.058
Deduct 408 from 450 and we're left 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.

Going ahead to step 10:
If we divide 420 by 51, we get 8 and a remainder of 12.
Put 8 as the next digit of the answer. 
Result so far: 13541.0588
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 outcome is 13541.0588, with a leftover of 0.00012.