322397 ÷ 643 
We're looking to find how many times 643 goes into 322397.

On to step 1:
If we divide 3 by 643, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 643

Going ahead to step 2:
The number 643 fits into 32 0 times, leaving a remainder of 32.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 32 and we're left with 32.
Bring next digit (2) of the dividend behind the 32 and repeat the process: 322 / 643

Moving on to step 3:
643 can be fit into 322 0 times, resulting in a remainder of 322.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 322, we get 322.
Grab the next digit (3) from the dividend, add it to 322, then carry on: 3223 / 643

Let's proceed to step 4:
When dividing 3223 by 643, we get 5 with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 3215 from 3223 and we're left with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 643

Going ahead to step 5:
When dividing 89 by 643, we get 0 with a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 50.0
If we take 0 away from 89, we end up with 89.
Take the next digit (7) from the dividend and append it to 89, then repeat: 897 / 643

Advancing to step 6:
The number 643 fits into 897 1 times, leaving a remainder of 254.
The next digit of our result is 1. 
Result so far: 501.0
Subtracting 643 from 897 leaves us with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 7:
The number 643 fits into 2540 3 times, leaving a remainder of 611.
Use 3 as the next digit of our solution. 
Result so far: 501.3
If we subtract 1929 from 2540, we get 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Going ahead to step 8:
643 can be fit into 6110 9 times, resulting in a remainder of 323.
Put 9 as the next digit of the answer. 
Result so far: 501.39
Subtract 5787 from 6110 to get 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

On to step 9:
If we divide 3230 by 643, we get 5 and a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 501.395
Subtract 3215 from 3230 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
150 divided by 643 is 0 with a remainder of 150.
The next digit of our result is 0. 
Result so far: 501.395
Deduct 0 from 150 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 11:
If we divide 1500 by 643, we get 2 and a remainder of 214.
Write down 2 as next digit of the result. 
Result so far: 501.39502
Subtract 1286 from 1500 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Advancing to step 12:
If we divide 2140 by 643, we get 3 and a remainder of 211.
The next digit of our result is 3. 
Result so far: 501.395023
Subtract 1929 from 2140 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Advancing to step 13:
643 goes into 2110 3 times with a remainder of 181.
Write down 3 as next digit of the result. 
Result so far: 501.3950233
The remainder is 181 after subtracting 1929 from 2110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

The final outcome is 501.3950233, with a leftover of 1.81e-06.