We look at the division of 73189086 by 864 
We want to divide 73189086 by 864.

Let's proceed to step 1:
864 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (3) of the dividend behind the 7 and repeat the process: 73 / 864

Advancing to step 2:
The number 864 fits into 73 0 times, leaving a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 73 after subtracting 0 from 73.
Append the next digit (1) from the dividend to 73 and continue with: 731 / 864

Advancing to step 3:
When dividing 731 by 864, we get 0 with a remainder of 731.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 731 to get 731.
Take the next digit (8) from the dividend and append it to 731, then repeat: 7318 / 864

Advancing to step 4:
7318 divided by 864 is 8 with a remainder of 406.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 6912 from 7318 and we're left with 406.
Take the next digit (9) from the dividend and append it to 406, then repeat: 4069 / 864

Advancing to step 5:
864 can be fit into 4069 4 times, resulting in a remainder of 613.
The next digit of our result is 4. 
Result so far: 84.0
If we take 3456 away from 4069, we end up with 613.
Grab the next digit (0) from the dividend, add it to 613, then carry on: 6130 / 864

Moving on to step 6:
864 goes into 6130 7 times with a remainder of 82.
Put 7 as the next digit of the answer. 
Result so far: 847.0
Subtract 6048 from 6130 to get 82.
Take the next digit (8) from the dividend and append it to 82, then repeat: 828 / 864

On to step 7:
864 goes into 828 0 times with a remainder of 828.
Use 0 as the next digit of our solution. 
Result so far: 8470.0
If we take 0 away from 828, we end up with 828.
Include the next digit (6) from the dividend after 828, then repeat: 8286 / 864

Let's proceed to step 8:
864 can be fit into 8286 9 times, resulting in a remainder of 510.
Use 9 as the next digit of our solution. 
Result so far: 84709.0
Subtracting 7776 from 8286 leaves us with 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Moving on to step 9:
864 goes into 5100 5 times with a remainder of 780.
The next digit of our result is 5. 
Result so far: 84709.5
Subtracting 4320 from 5100 leaves us with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Step 10:
When dividing 7800 by 864, we get 9 with a remainder of 24.
Write down 9 as next digit of the result. 
Result so far: 84709.59
If we take 7776 away from 7800, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 11:
When dividing 240 by 864, we get 0 with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 84709.59
Subtracting 0 from 240 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 12:
2400 divided by 864 is 2 with a remainder of 672.
Record the quotient 2 as the next digit in the result. 
Result so far: 84709.5902
Subtracting 1728 from 2400 leaves us with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Advancing to step 13:
864 goes into 6720 7 times with a remainder of 672.
Record the quotient 7 as the next digit in the result. 
Result so far: 84709.59027
Deduct 6048 from 6720 and we're left with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

Step 14:
The number 864 fits into 6720 7 times, leaving a remainder of 672.
Use 7 as the next digit of our solution. 
Result so far: 84709.590277
Subtracting 6048 from 6720 leaves us with 672.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6720, and continue the process.

The quotient of the division is 84709.590277, and the remainder is 6.72e-05.