We divide 643866 by 76
Our goal is to divide 643866 by 76.

Going ahead to step 1:
When dividing 6 by 76, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 76

Let's proceed to step 2:
76 can be fit into 64 0 times, resulting in a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Take the next digit (3) from the dividend and append it to 64, then repeat: 643 / 76

On to step 3:
If we divide 643 by 76, we get 8 and a remainder of 35.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 608 from 643 to get 35.
Bring next digit (8) of the dividend behind the 35 and repeat the process: 358 / 76

Advancing to step 4:
The number 76 fits into 358 4 times, leaving a remainder of 54.
The next digit of our result is 4. 
Result so far: 84.0
Subtracting 304 from 358 leaves us with 54.
Fetch the next digit (6) from the dividend, attach it to 54 and continue: 546 / 76

On to step 5:
When dividing 546 by 76, we get 7 with a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 847.0
Subtracting 532 from 546 leaves us with 14.
Append the next digit (6) from the dividend to 14 and continue with: 146 / 76

Step 6:
76 goes into 146 1 times with a remainder of 70.
Put 1 as the next digit of the answer. 
Result so far: 8471.0
Subtract 76 from 146 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 7:
76 can be fit into 700 9 times, resulting in a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 8471.9
Subtracting 684 from 700 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
76 can be fit into 160 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 8471.92
If we subtract 152 from 160, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
80 divided by 76 is 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 8471.921
Deduct 76 from 80 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
When dividing 40 by 76, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 8471.921
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
400 divided by 76 is 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 8471.92105
Subtract 380 from 400 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 12:
The number 76 fits into 200 2 times, leaving a remainder of 48.
Write down 2 as next digit of the result. 
Result so far: 8471.921052
Subtract 152 from 200 to get 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 13:
76 goes into 480 6 times with a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 8471.9210526
If we subtract 456 from 480, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 14:
76 goes into 240 3 times with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 8471.92105263
Subtract 228 from 240 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 8471.92105263, with a leftover of 1.2e-08.