We look at the division of 73739021 by 869 
We want to figure out the number of times 73739021 can be divided by 869.

Going ahead to step 1:
If we divide 7 by 869, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 869

Let's proceed to step 2:
If we divide 73 by 869, we get 0 and a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 73 to get 73.
Include the next digit (7) from the dividend after 73, then repeat: 737 / 869

On to step 3:
737 divided by 869 is 0 with a remainder of 737.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 737 after subtracting 0 from 737.
Include the next digit (3) from the dividend after 737, then repeat: 7373 / 869

Step 4:
If we divide 7373 by 869, we get 8 and a remainder of 421.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 6952 from 7373 to get 421.
Include the next digit (9) from the dividend after 421, then repeat: 4219 / 869

Moving on to step 5:
If we divide 4219 by 869, we get 4 and a remainder of 743.
The next digit of our result is 4. 
Result so far: 84.0
If we subtract 3476 from 4219, we get 743.
Bring next digit (0) of the dividend behind the 743 and repeat the process: 7430 / 869

Let's proceed to step 6:
7430 divided by 869 is 8 with a remainder of 478.
Write down 8 as next digit of the result. 
Result so far: 848.0
Subtracting 6952 from 7430 leaves us with 478.
Fetch the next digit (2) from the dividend, attach it to 478 and continue: 4782 / 869

Going ahead to step 7:
869 goes into 4782 5 times with a remainder of 437.
Use 5 as the next digit of our solution. 
Result so far: 8485.0
Deduct 4345 from 4782 and we're left with 437.
Fetch the next digit (1) from the dividend, attach it to 437 and continue: 4371 / 869

Advancing to step 8:
869 can be fit into 4371 5 times, resulting in a remainder of 26.
The number 5 becomes the next digit in our result. 
Result so far: 84855.0
The remainder is 26 after subtracting 4345 from 4371.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 9:
If we divide 260 by 869, we get 0 and a remainder of 260.
Write down 0 as next digit of the result. 
Result so far: 84855.0
If we take 0 away from 260, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 10:
If we divide 2600 by 869, we get 2 and a remainder of 862.
The number 2 becomes the next digit in our result. 
Result so far: 84855.02
The remainder is 862 after subtracting 1738 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8620, and continue the process.

Step 11:
8620 divided by 869 is 9 with a remainder of 799.
Put 9 as the next digit of the answer. 
Result so far: 84855.029
Subtracting 7821 from 8620 leaves us with 799.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7990, and continue the process.

Step 12:
7990 divided by 869 is 9 with a remainder of 169.
The next digit of our result is 9. 
Result so far: 84855.0299
Deduct 7821 from 7990 and we're left with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

After the division, we end up with 84855.0299 and a remainder of 0.00169.