We look at the division of 80389189 by 812 
We want to figure out the number of times 80389189 can be divided by 812.

On to step 1:
If we divide 8 by 812, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 812

Step 2:
The number 812 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Include the next digit (3) from the dividend after 80, then repeat: 803 / 812

Advancing to step 3:
If we divide 803 by 812, we get 0 and a remainder of 803.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 803 and we're left with 803.
Grab the next digit (8) from the dividend, add it to 803, then carry on: 8038 / 812

Advancing to step 4:
812 goes into 8038 9 times with a remainder of 730.
Use 9 as the next digit of our solution. 
Result so far: 9.0
The remainder is 730 after subtracting 7308 from 8038.
Grab the next digit (9) from the dividend, add it to 730, then carry on: 7309 / 812

Let's proceed to step 5:
If we divide 7309 by 812, we get 9 and a remainder of 1.
Use 9 as the next digit of our solution. 
Result so far: 99.0
Subtract 7308 from 7309 to get 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 812

Let's proceed to step 6:
812 goes into 11 0 times with a remainder of 11.
Put 0 as the next digit of the answer. 
Result so far: 990.0
The remainder is 11 after subtracting 0 from 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 812

Moving on to step 7:
118 divided by 812 is 0 with a remainder of 118.
Use 0 as the next digit of our solution. 
Result so far: 9900.0
Subtracting 0 from 118 leaves us with 118.
Bring next digit (9) of the dividend behind the 118 and repeat the process: 1189 / 812

Step 8:
812 goes into 1189 1 times with a remainder of 377.
Record the quotient 1 as the next digit in the result. 
Result so far: 99001.0
If we subtract 812 from 1189, we get 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Moving on to step 9:
If we divide 3770 by 812, we get 4 and a remainder of 522.
Put 4 as the next digit of the answer. 
Result so far: 99001.4
If we subtract 3248 from 3770, we get 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Going ahead to step 10:
The number 812 fits into 5220 6 times, leaving a remainder of 348.
The next digit of our result is 6. 
Result so far: 99001.46
Subtracting 4872 from 5220 leaves us with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Going ahead to step 11:
When dividing 3480 by 812, we get 4 with a remainder of 232.
Record the quotient 4 as the next digit in the result. 
Result so far: 99001.464
Subtract 3248 from 3480 to get 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 12:
812 can be fit into 2320 2 times, resulting in a remainder of 696.
Use 2 as the next digit of our solution. 
Result so far: 99001.4642
Subtract 1624 from 2320 to get 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Let's proceed to step 13:
6960 divided by 812 is 8 with a remainder of 464.
The number 8 becomes the next digit in our result. 
Result so far: 99001.46428
Subtracting 6496 from 6960 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Advancing to step 14:
4640 divided by 812 is 5 with a remainder of 580.
Use 5 as the next digit of our solution. 
Result so far: 99001.464285
Deduct 4060 from 4640 and we're left with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 15:
If we divide 5800 by 812, we get 7 and a remainder of 116.
Put 7 as the next digit of the answer. 
Result so far: 99001.4642857
Subtracting 5684 from 5800 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 16:
1160 divided by 812 is 1 with a remainder of 348.
Write down 1 as next digit of the result. 
Result so far: 99001.46428571
If we take 812 away from 1160, we end up with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

After the division, we end up with 99001.46428571 and a remainder of 3.48e-07.