51286111 ÷ 897 
We want to figure out the number of times 51286111 can be divided by 897.

On to step 1:
897 can be fit into 5 0 times, resulting in a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 897

Advancing to step 2:
If we divide 51 by 897, we get 0 and a remainder of 51.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Fetch the next digit (2) from the dividend, attach it to 51 and continue: 512 / 897

Let's proceed to step 3:
897 goes into 512 0 times with a remainder of 512.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 512, we end up with 512.
Include the next digit (8) from the dividend after 512, then repeat: 5128 / 897

Moving on to step 4:
897 goes into 5128 5 times with a remainder of 643.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 643 after subtracting 4485 from 5128.
Bring next digit (6) of the dividend behind the 643 and repeat the process: 6436 / 897

Advancing to step 5:
When dividing 6436 by 897, we get 7 with a remainder of 157.
The next digit of our result is 7. 
Result so far: 57.0
Subtract 6279 from 6436 to get 157.
Take the next digit (1) from the dividend and append it to 157, then repeat: 1571 / 897

Let's proceed to step 6:
If we divide 1571 by 897, we get 1 and a remainder of 674.
Record the quotient 1 as the next digit in the result. 
Result so far: 571.0
Subtract 897 from 1571 to get 674.
Bring next digit (1) of the dividend behind the 674 and repeat the process: 6741 / 897

Step 7:
6741 divided by 897 is 7 with a remainder of 462.
Put 7 as the next digit of the answer. 
Result so far: 5717.0
Subtracting 6279 from 6741 leaves us with 462.
Grab the next digit (1) from the dividend, add it to 462, then carry on: 4621 / 897

Let's proceed to step 8:
When dividing 4621 by 897, we get 5 with a remainder of 136.
The number 5 becomes the next digit in our result. 
Result so far: 57175.0
Subtracting 4485 from 4621 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 9:
If we divide 1360 by 897, we get 1 and a remainder of 463.
The number 1 becomes the next digit in our result. 
Result so far: 57175.1
Deduct 897 from 1360 and we're left with 463.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4630, and continue the process.

Step 10:
897 can be fit into 4630 5 times, resulting in a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 57175.15
If we subtract 4485 from 4630, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 11:
If we divide 1450 by 897, we get 1 and a remainder of 553.
Put 1 as the next digit of the answer. 
Result so far: 57175.151
If we subtract 897 from 1450, we get 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

Going ahead to step 12:
The number 897 fits into 5530 6 times, leaving a remainder of 148.
The next digit of our result is 6. 
Result so far: 57175.1516
Deduct 5382 from 5530 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 13:
897 goes into 1480 1 times with a remainder of 583.
Put 1 as the next digit of the answer. 
Result so far: 57175.15161
If we subtract 897 from 1480, we get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

On to step 14:
The number 897 fits into 5830 6 times, leaving a remainder of 448.
The next digit of our result is 6. 
Result so far: 57175.151616
Subtract 5382 from 5830 to get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

On to step 15:
4480 divided by 897 is 4 with a remainder of 892.
The number 4 becomes the next digit in our result. 
Result so far: 57175.1516164
Deduct 3588 from 4480 and we're left with 892.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8920, and continue the process.

Moving on to step 16:
8920 divided by 897 is 9 with a remainder of 847.
Write down 9 as next digit of the result. 
Result so far: 57175.15161649
If we subtract 8073 from 8920, we get 847.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8470, and continue the process.

In conclusion, the division gives 57175.15161649 with a balance of 8.47e-07.