We look at the division of 54212063 by 861 
Let's see how many times 861 fits into 54212063.

On to step 1:
If we divide 5 by 861, we get 0 and a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 861

Let's proceed to step 2:
When dividing 54 by 861, we get 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 54 and we're left with 54.
Grab the next digit (2) from the dividend, add it to 54, then carry on: 542 / 861

Going ahead to step 3:
If we divide 542 by 861, we get 0 and a remainder of 542.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 542, we end up with 542.
Fetch the next digit (1) from the dividend, attach it to 542 and continue: 5421 / 861

Advancing to step 4:
The number 861 fits into 5421 6 times, leaving a remainder of 255.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 5166 from 5421 to get 255.
Fetch the next digit (2) from the dividend, attach it to 255 and continue: 2552 / 861

Step 5:
861 can be fit into 2552 2 times, resulting in a remainder of 830.
The number 2 becomes the next digit in our result. 
Result so far: 62.0
If we take 1722 away from 2552, we end up with 830.
Append the next digit (0) from the dividend to 830 and continue with: 8300 / 861

Advancing to step 6:
If we divide 8300 by 861, we get 9 and a remainder of 551.
Write down 9 as next digit of the result. 
Result so far: 629.0
Deduct 7749 from 8300 and we're left with 551.
Append the next digit (6) from the dividend to 551 and continue with: 5516 / 861

Step 7:
861 can be fit into 5516 6 times, resulting in a remainder of 350.
Write down 6 as next digit of the result. 
Result so far: 6296.0
Subtracting 5166 from 5516 leaves us with 350.
Append the next digit (3) from the dividend to 350 and continue with: 3503 / 861

Let's proceed to step 8:
The number 861 fits into 3503 4 times, leaving a remainder of 59.
Put 4 as the next digit of the answer. 
Result so far: 62964.0
Subtract 3444 from 3503 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 9:
If we divide 590 by 861, we get 0 and a remainder of 590.
Record the quotient 0 as the next digit in the result. 
Result so far: 62964.0
If we subtract 0 from 590, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Advancing to step 10:
861 goes into 5900 6 times with a remainder of 734.
Use 6 as the next digit of our solution. 
Result so far: 62964.06
Subtracting 5166 from 5900 leaves us with 734.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7340, and continue the process.

On to step 11:
If we divide 7340 by 861, we get 8 and a remainder of 452.
The next digit of our result is 8. 
Result so far: 62964.068
The remainder is 452 after subtracting 6888 from 7340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Step 12:
861 can be fit into 4520 5 times, resulting in a remainder of 215.
Use 5 as the next digit of our solution. 
Result so far: 62964.0685
If we subtract 4305 from 4520, we get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 13:
When dividing 2150 by 861, we get 2 with a remainder of 428.
Use 2 as the next digit of our solution. 
Result so far: 62964.06852
If we take 1722 away from 2150, we end up with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

On to step 14:
4280 divided by 861 is 4 with a remainder of 836.
Use 4 as the next digit of our solution. 
Result so far: 62964.068524
Subtract 3444 from 4280 to get 836.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8360, and continue the process.

Let's proceed to step 15:
When dividing 8360 by 861, we get 9 with a remainder of 611.
Use 9 as the next digit of our solution. 
Result so far: 62964.0685249
If we take 7749 away from 8360, we end up with 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Advancing to step 16:
The number 861 fits into 6110 7 times, leaving a remainder of 83.
The next digit of our result is 7. 
Result so far: 62964.06852497
The remainder is 83 after subtracting 6027 from 6110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Our division results in 62964.06852497 with a remaining 8.3e-08.