640057 ÷ 73 
We want to figure out the number of times 640057 can be divided by 73.

Step 1:
73 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 73

Going ahead to step 2:
73 can be fit into 64 0 times, resulting in a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (0) from the dividend, attach it to 64 and continue: 640 / 73

Advancing to step 3:
The number 73 fits into 640 8 times, leaving a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtract 584 from 640 to get 56.
Include the next digit (0) from the dividend after 56, then repeat: 560 / 73

Going ahead to step 4:
560 divided by 73 is 7 with a remainder of 49.
Write down 7 as next digit of the result. 
Result so far: 87.0
The remainder is 49 after subtracting 511 from 560.
Include the next digit (5) from the dividend after 49, then repeat: 495 / 73

Moving on to step 5:
73 goes into 495 6 times with a remainder of 57.
The number 6 becomes the next digit in our result. 
Result so far: 876.0
If we subtract 438 from 495, we get 57.
Include the next digit (7) from the dividend after 57, then repeat: 577 / 73

Going ahead to step 6:
73 can be fit into 577 7 times, resulting in a remainder of 66.
Use 7 as the next digit of our solution. 
Result so far: 8767.0
Subtract 511 from 577 to 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.

Moving on to step 7:
73 goes into 660 9 times with a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 8767.9
The remainder is 3 after subtracting 657 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 8:
When dividing 30 by 73, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 8767.9
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
If we divide 300 by 73, we get 4 and a remainder of 8.
The next digit of our result is 4. 
Result so far: 8767.904
The remainder is 8 after subtracting 292 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 10:
73 can be fit into 80 1 times, resulting in a remainder of 7.
Record the quotient 1 as the next digit in the result. 
Result so far: 8767.9041
If we subtract 73 from 80, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 11:
73 goes into 70 0 times with a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 8767.9041
Subtract 0 from 70 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.

Let's proceed to step 12:
The number 73 fits into 700 9 times, leaving a remainder of 43.
Write down 9 as next digit of the result. 
Result so far: 8767.904109
Deduct 657 from 700 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 13:
When dividing 430 by 73, we get 5 with a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 8767.9041095
If we subtract 365 from 430, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 14:
The number 73 fits into 650 8 times, leaving a remainder of 66.
Put 8 as the next digit of the answer. 
Result so far: 8767.90410958
Subtract 584 from 650 to 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.

The final result is 8767.90410958 with a remainder of 6.6e-08.