Let's divide 640990 by 52
Our goal is to divide 640990 by 52.

Going ahead to step 1:
If we divide 6 by 52, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 52

On to step 2:
52 can be fit into 64 1 times, resulting in a remainder of 12.
The next digit of our result is 1. 
Result so far: 1.0
If we take 52 away from 64, we end up with 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 52

Advancing to step 3:
The number 52 fits into 120 2 times, leaving a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
If we subtract 104 from 120, we get 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 52

Moving on to step 4:
The number 52 fits into 169 3 times, leaving a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 123.0
Subtract 156 from 169 to get 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 52

On to step 5:
The number 52 fits into 139 2 times, leaving a remainder of 35.
The next digit of our result is 2. 
Result so far: 1232.0
Subtract 104 from 139 to get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 52

Advancing to step 6:
When dividing 350 by 52, we get 6 with a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 12326.0
Subtract 312 from 350 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 7:
If we divide 380 by 52, we get 7 and a remainder of 16.
The next digit of our result is 7. 
Result so far: 12326.7
Subtracting 364 from 380 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.

Advancing to step 8:
The number 52 fits into 160 3 times, leaving a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 12326.73
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
If we divide 40 by 52, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 12326.73
If we take 0 away from 40, we end up with 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 10:
52 goes into 400 7 times with a remainder of 36.
The next digit of our result is 7. 
Result so far: 12326.7307
Subtracting 364 from 400 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 11:
When dividing 360 by 52, we get 6 with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 12326.73076
If we take 312 away from 360, we end up with 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 12:
If we divide 480 by 52, we get 9 and a remainder of 12.
The next digit of our result is 9. 
Result so far: 12326.730769
Subtract 468 from 480 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.

Advancing to step 13:
If we divide 120 by 52, we get 2 and a remainder of 16.
Use 2 as the next digit of our solution. 
Result so far: 12326.7307692
The remainder is 16 after subtracting 104 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
The number 52 fits into 160 3 times, leaving a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 12326.73076923
Deduct 156 from 160 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.

In conclusion, the division gives 12326.73076923 with a balance of 4e-09.