Let's divide 73123 by 81
We're looking to find how many times 81 goes into 73123.

Step 1:
7 divided by 81 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (3) from the dividend after 7, then repeat: 73 / 81

On to step 2:
If we divide 73 by 81, we get 0 and a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 73, we end up with 73.
Fetch the next digit (1) from the dividend, attach it to 73 and continue: 731 / 81

Step 3:
731 divided by 81 is 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtract 729 from 731 to get 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 81

Advancing to step 4:
81 can be fit into 22 0 times, resulting in a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 90.0
Subtract 0 from 22 to get 22.
Take the next digit (3) from the dividend and append it to 22, then repeat: 223 / 81

Advancing to step 5:
223 divided by 81 is 2 with a remainder of 61.
Use 2 as the next digit of our solution. 
Result so far: 902.0
If we take 162 away from 223, we end up with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Let's proceed to step 6:
610 divided by 81 is 7 with a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 902.7
Subtracting 567 from 610 leaves us 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.

Going ahead to step 7:
If we divide 430 by 81, we get 5 and a remainder of 25.
The next digit of our result is 5. 
Result so far: 902.75
Subtract 405 from 430 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 8:
The number 81 fits into 250 3 times, leaving a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 902.753
If we subtract 243 from 250, 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.

Let's proceed to step 9:
The number 81 fits into 70 0 times, leaving a remainder of 70.
The number 0 becomes the next digit in our result. 
Result so far: 902.753
Deduct 0 from 70 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 10:
700 divided by 81 is 8 with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 902.75308
The remainder is 52 after subtracting 648 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 11:
The number 81 fits into 520 6 times, leaving a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 902.753086
If we take 486 away from 520, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 12:
81 can be fit into 340 4 times, resulting in a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 902.7530864
If we subtract 324 from 340, we get 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 13:
81 can be fit into 160 1 times, resulting in a remainder of 79.
Use 1 as the next digit of our solution. 
Result so far: 902.75308641
Subtract 81 from 160 to get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

The final outcome is 902.75308641, with a leftover of 7.9e-08.