661548 divided by 51 
We want to figure out the number of times 661548 can be divided by 51.

Advancing to 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
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 51

Step 2:
66 divided by 51 is 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 51 from 66 leaves us with 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 51

Let's proceed to step 3:
51 goes into 151 2 times with a remainder of 49.
The next digit of our result is 2. 
Result so far: 12.0
Deduct 102 from 151 and we're left with 49.
Grab the next digit (5) from the dividend, add it to 49, then carry on: 495 / 51

On to step 4:
The number 51 fits into 495 9 times, leaving a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 129.0
Deduct 459 from 495 and we're left with 36.
Bring next digit (4) of the dividend behind the 36 and repeat the process: 364 / 51

Going ahead to step 5:
51 goes into 364 7 times with a remainder of 7.
Write down 7 as next digit of the result. 
Result so far: 1297.0
If we take 357 away from 364, we end up with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 51

Going ahead to step 6:
If we divide 78 by 51, we get 1 and a remainder of 27.
Use 1 as the next digit of our solution. 
Result so far: 12971.0
Subtract 51 from 78 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
The number 51 fits into 270 5 times, leaving a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 12971.5
Subtracting 255 from 270 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
When dividing 150 by 51, we get 2 with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 12971.52
The remainder is 48 after subtracting 102 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 9:
The number 51 fits into 480 9 times, leaving a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 12971.529
Subtract 459 from 480 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 10:
210 divided by 51 is 4 with a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 12971.5294
Deduct 204 from 210 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 11:
The number 51 fits into 60 1 times, leaving a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 12971.52941
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 12:
51 can be fit into 90 1 times, resulting in a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 12971.529411
Deduct 51 from 90 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 12971.529411, with a leftover of 3.9e-06.