51257236 ÷ 266 
Our goal is to divide 51257236 by 266.

Let's proceed to step 1:
When dividing 5 by 266, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 266

Going ahead to step 2:
266 can be fit into 51 0 times, resulting in a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 266

Let's proceed to step 3:
When dividing 512 by 266, we get 1 with a remainder of 246.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 266 from 512 and we're left with 246.
Fetch the next digit (5) from the dividend, attach it to 246 and continue: 2465 / 266

Going ahead to step 4:
266 goes into 2465 9 times with a remainder of 71.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Deduct 2394 from 2465 and we're left with 71.
Include the next digit (7) from the dividend after 71, then repeat: 717 / 266

Let's proceed to step 5:
When dividing 717 by 266, we get 2 with a remainder of 185.
Write down 2 as next digit of the result. 
Result so far: 192.0
Deduct 532 from 717 and we're left with 185.
Bring next digit (2) of the dividend behind the 185 and repeat the process: 1852 / 266

Moving on to step 6:
266 goes into 1852 6 times with a remainder of 256.
Record the quotient 6 as the next digit in the result. 
Result so far: 1926.0
The remainder is 256 after subtracting 1596 from 1852.
Grab the next digit (3) from the dividend, add it to 256, then carry on: 2563 / 266

Advancing to step 7:
266 goes into 2563 9 times with a remainder of 169.
Use 9 as the next digit of our solution. 
Result so far: 19269.0
If we take 2394 away from 2563, we end up with 169.
Append the next digit (6) from the dividend to 169 and continue with: 1696 / 266

Going ahead to step 8:
The number 266 fits into 1696 6 times, leaving a remainder of 100.
Record the quotient 6 as the next digit in the result. 
Result so far: 192696.0
If we subtract 1596 from 1696, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 9:
1000 divided by 266 is 3 with a remainder of 202.
Put 3 as the next digit of the answer. 
Result so far: 192696.3
The remainder is 202 after subtracting 798 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Going ahead to step 10:
266 can be fit into 2020 7 times, resulting in a remainder of 158.
Record the quotient 7 as the next digit in the result. 
Result so far: 192696.37
If we subtract 1862 from 2020, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Let's proceed to step 11:
The number 266 fits into 1580 5 times, leaving a remainder of 250.
The next digit of our result is 5. 
Result so far: 192696.375
If we subtract 1330 from 1580, we get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 12:
2500 divided by 266 is 9 with a remainder of 106.
Use 9 as the next digit of our solution. 
Result so far: 192696.3759
Subtract 2394 from 2500 to get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 13:
266 goes into 1060 3 times with a remainder of 262.
Use 3 as the next digit of our solution. 
Result so far: 192696.37593
The remainder is 262 after subtracting 798 from 1060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

On to step 14:
When dividing 2620 by 266, we get 9 with a remainder of 226.
Use 9 as the next digit of our solution. 
Result so far: 192696.375939
If we subtract 2394 from 2620, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 15:
When dividing 2260 by 266, we get 8 with a remainder of 132.
Put 8 as the next digit of the answer. 
Result so far: 192696.3759398
If we subtract 2128 from 2260, we get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Advancing to step 16:
266 can be fit into 1320 4 times, resulting in a remainder of 256.
The next digit of our result is 4. 
Result so far: 192696.37593984
Subtracting 1064 from 1320 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

After the division, we end up with 192696.37593984 and a remainder of 2.56e-07.