Let's divide 72993580 by 810
We're looking to find how many times 810 goes into 72993580.

Going ahead to step 1:
810 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 810

On to step 2:
The number 810 fits into 72 0 times, leaving a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Append the next digit (9) from the dividend to 72 and continue with: 729 / 810

Advancing to step 3:
When dividing 729 by 810, we get 0 with a remainder of 729.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 729, we get 729.
Bring next digit (9) of the dividend behind the 729 and repeat the process: 7299 / 810

Going ahead to step 4:
7299 divided by 810 is 9 with a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Subtract 7290 from 7299 to get 9.
Include the next digit (3) from the dividend after 9, then repeat: 93 / 810

Step 5:
93 divided by 810 is 0 with a remainder of 93.
Record the quotient 0 as the next digit in the result. 
Result so far: 90.0
If we subtract 0 from 93, we get 93.
Bring next digit (5) of the dividend behind the 93 and repeat the process: 935 / 810

Advancing to step 6:
When dividing 935 by 810, we get 1 with a remainder of 125.
The next digit of our result is 1. 
Result so far: 901.0
If we subtract 810 from 935, we get 125.
Take the next digit (8) from the dividend and append it to 125, then repeat: 1258 / 810

On to step 7:
810 goes into 1258 1 times with a remainder of 448.
Record the quotient 1 as the next digit in the result. 
Result so far: 9011.0
The remainder is 448 after subtracting 810 from 1258.
Include the next digit (0) from the dividend after 448, then repeat: 4480 / 810

Let's proceed to step 8:
810 goes into 4480 5 times with a remainder of 430.
The number 5 becomes the next digit in our result. 
Result so far: 90115.0
Subtracting 4050 from 4480 leaves us with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Let's proceed to step 9:
The number 810 fits into 4300 5 times, leaving a remainder of 250.
The number 5 becomes the next digit in our result. 
Result so far: 90115.5
Subtracting 4050 from 4300 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 10:
If we divide 2500 by 810, we get 3 and a remainder of 70.
Write down 3 as next digit of the result. 
Result so far: 90115.53
Deduct 2430 from 2500 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.

Going ahead to step 11:
The number 810 fits into 700 0 times, leaving a remainder of 700.
Put 0 as the next digit of the answer. 
Result so far: 90115.53
The remainder is 700 after subtracting 0 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Step 12:
7000 divided by 810 is 8 with a remainder of 520.
The number 8 becomes the next digit in our result. 
Result so far: 90115.5308
Deduct 6480 from 7000 and we're left with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 13:
5200 divided by 810 is 6 with a remainder of 340.
The number 6 becomes the next digit in our result. 
Result so far: 90115.53086
Deduct 4860 from 5200 and we're left with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Advancing to step 14:
When dividing 3400 by 810, we get 4 with a remainder of 160.
Record the quotient 4 as the next digit in the result. 
Result so far: 90115.530864
If we subtract 3240 from 3400, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 15:
1600 divided by 810 is 1 with a remainder of 790.
The next digit of our result is 1. 
Result so far: 90115.5308641
If we take 810 away from 1600, we end up with 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7900, and continue the process.

Going ahead to step 16:
When dividing 7900 by 810, we get 9 with a remainder of 610.
The number 9 becomes the next digit in our result. 
Result so far: 90115.53086419
Subtracting 7290 from 7900 leaves us with 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

After the division, we end up with 90115.53086419 and a remainder of 6.1e-07.