643998 divided by 69 
We want to divide 643998 by 69.

Step 1:
When dividing 6 by 69, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 69

Going ahead to step 2:
64 divided by 69 is 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Take the next digit (3) from the dividend and append it to 64, then repeat: 643 / 69

Let's proceed to step 3:
69 can be fit into 643 9 times, resulting in a remainder of 22.
The next digit of our result is 9. 
Result so far: 9.0
If we take 621 away from 643, we end up with 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 69

Advancing to step 4:
The number 69 fits into 229 3 times, leaving a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 93.0
Subtract 207 from 229 to get 22.
Include the next digit (9) from the dividend after 22, then repeat: 229 / 69

Step 5:
If we divide 229 by 69, we get 3 and a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 933.0
If we subtract 207 from 229, we get 22.
Take the next digit (8) from the dividend and append it to 22, then repeat: 228 / 69

Advancing to step 6:
The number 69 fits into 228 3 times, leaving a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 9333.0
Deduct 207 from 228 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
210 divided by 69 is 3 with a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 9333.3
If we subtract 207 from 210, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 8:
69 goes into 30 0 times with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 9333.3
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
If we divide 300 by 69, we get 4 and a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 9333.304
The remainder is 24 after subtracting 276 from 300.
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 10:
The number 69 fits into 240 3 times, leaving a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 9333.3043
Deduct 207 from 240 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 11:
69 can be fit into 330 4 times, resulting in a remainder of 54.
Record the quotient 4 as the next digit in the result. 
Result so far: 9333.30434
If we subtract 276 from 330, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 12:
When dividing 540 by 69, we get 7 with a remainder of 57.
The next digit of our result is 7. 
Result so far: 9333.304347
The remainder is 57 after subtracting 483 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 13:
69 can be fit into 570 8 times, resulting in a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 9333.3043478
The remainder is 18 after subtracting 552 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 14:
69 goes into 180 2 times with a remainder of 42.
The number 2 becomes the next digit in our result. 
Result so far: 9333.30434782
If we take 138 away from 180, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

After the division, we end up with 9333.30434782 and a remainder of 4.2e-08.