266859 divided by 51 
We're looking to find how many times 51 goes into 266859.

On to step 1:
If we divide 2 by 51, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 51

Moving on to step 2:
51 can be fit into 26 0 times, resulting in a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 26, we get 26.
Fetch the next digit (6) from the dividend, attach it to 26 and continue: 266 / 51

Let's proceed to step 3:
51 goes into 266 5 times with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 255 from 266 to get 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 51

Going ahead to step 4:
The number 51 fits into 118 2 times, leaving a remainder of 16.
The next digit of our result is 2. 
Result so far: 52.0
Deduct 102 from 118 and we're left with 16.
Append the next digit (5) from the dividend to 16 and continue with: 165 / 51

Step 5:
The number 51 fits into 165 3 times, leaving a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 523.0
If we subtract 153 from 165, we get 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 51

Advancing to step 6:
51 goes into 129 2 times with a remainder of 27.
The number 2 becomes the next digit in our result. 
Result so far: 5232.0
Subtract 102 from 129 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.

Advancing to step 7:
51 can be fit into 270 5 times, resulting in a remainder of 15.
The next digit of our result is 5. 
Result so far: 5232.5
The remainder is 15 after subtracting 255 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 8:
150 divided by 51 is 2 with a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 5232.52
Deduct 102 from 150 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
51 can be fit into 480 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 5232.529
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.

Moving on to step 10:
51 can be fit into 210 4 times, resulting in a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 5232.5294
Subtracting 204 from 210 leaves us 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:
When dividing 60 by 51, we get 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 5232.52941
If we take 51 away from 60, we end up with 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:
When dividing 90 by 51, we get 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 5232.529411
If we take 51 away from 90, we end up 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 result is 5232.529411 with a remainder of 3.9e-06.