86324199 ÷ 646 
We want to divide 86324199 by 646.

Advancing to step 1:
646 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 646

Step 2:
When dividing 86 by 646, we get 0 with a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Grab the next digit (3) from the dividend, add it to 86, then carry on: 863 / 646

Step 3:
When dividing 863 by 646, we get 1 with a remainder of 217.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 646 away from 863, we end up with 217.
Append the next digit (2) from the dividend to 217 and continue with: 2172 / 646

Step 4:
2172 divided by 646 is 3 with a remainder of 234.
Use 3 as the next digit of our solution. 
Result so far: 13.0
The remainder is 234 after subtracting 1938 from 2172.
Include the next digit (4) from the dividend after 234, then repeat: 2344 / 646

Step 5:
If we divide 2344 by 646, we get 3 and a remainder of 406.
Write down 3 as next digit of the result. 
Result so far: 133.0
Subtract 1938 from 2344 to get 406.
Take the next digit (1) from the dividend and append it to 406, then repeat: 4061 / 646

Step 6:
4061 divided by 646 is 6 with a remainder of 185.
Use 6 as the next digit of our solution. 
Result so far: 1336.0
The remainder is 185 after subtracting 3876 from 4061.
Bring next digit (9) of the dividend behind the 185 and repeat the process: 1859 / 646

Advancing to step 7:
646 goes into 1859 2 times with a remainder of 567.
Record the quotient 2 as the next digit in the result. 
Result so far: 13362.0
If we take 1292 away from 1859, we end up with 567.
Fetch the next digit (9) from the dividend, attach it to 567 and continue: 5679 / 646

Advancing to step 8:
If we divide 5679 by 646, we get 8 and a remainder of 511.
Write down 8 as next digit of the result. 
Result so far: 133628.0
If we take 5168 away from 5679, we end up with 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Let's proceed to step 9:
646 can be fit into 5110 7 times, resulting in a remainder of 588.
Write down 7 as next digit of the result. 
Result so far: 133628.7
Subtracting 4522 from 5110 leaves us with 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Advancing to step 10:
When dividing 5880 by 646, we get 9 with a remainder of 66.
Use 9 as the next digit of our solution. 
Result so far: 133628.79
If we subtract 5814 from 5880, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 11:
646 goes into 660 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 133628.791
Subtract 646 from 660 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 12:
646 can be fit into 140 0 times, resulting in a remainder of 140.
The number 0 becomes the next digit in our result. 
Result so far: 133628.791
Subtracting 0 from 140 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 13:
When dividing 1400 by 646, we get 2 with a remainder of 108.
Record the quotient 2 as the next digit in the result. 
Result so far: 133628.79102
Subtract 1292 from 1400 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Step 14:
646 can be fit into 1080 1 times, resulting in a remainder of 434.
Put 1 as the next digit of the answer. 
Result so far: 133628.791021
If we take 646 away from 1080, we end up with 434.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4340, and continue the process.

Advancing to step 15:
646 can be fit into 4340 6 times, resulting in a remainder of 464.
The number 6 becomes the next digit in our result. 
Result so far: 133628.7910216
Subtracting 3876 from 4340 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Going ahead to step 16:
The number 646 fits into 4640 7 times, leaving a remainder of 118.
Put 7 as the next digit of the answer. 
Result so far: 133628.79102167
The remainder is 118 after subtracting 4522 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

The final outcome is 133628.79102167, with a leftover of 1.18e-07.