673725 divided by 81 
We're looking to find how many times 81 goes into 673725.

Going ahead to step 1:
6 divided by 81 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 81

Moving on to step 2:
67 divided by 81 is 0 with a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 67, we end up with 67.
Append the next digit (3) from the dividend to 67 and continue with: 673 / 81

Step 3:
81 can be fit into 673 8 times, resulting in a remainder of 25.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Deduct 648 from 673 and we're left with 25.
Append the next digit (7) from the dividend to 25 and continue with: 257 / 81

Advancing to step 4:
81 goes into 257 3 times with a remainder of 14.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
Deduct 243 from 257 and we're left with 14.
Grab the next digit (2) from the dividend, add it to 14, then carry on: 142 / 81

Moving on to step 5:
When dividing 142 by 81, we get 1 with a remainder of 61.
The next digit of our result is 1. 
Result so far: 831.0
Subtracting 81 from 142 leaves us with 61.
Grab the next digit (5) from the dividend, add it to 61, then carry on: 615 / 81

Let's proceed to step 6:
The number 81 fits into 615 7 times, leaving a remainder of 48.
Use 7 as the next digit of our solution. 
Result so far: 8317.0
Subtract 567 from 615 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 7:
81 goes into 480 5 times with a remainder of 75.
The next digit of our result is 5. 
Result so far: 8317.5
If we subtract 405 from 480, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 8:
81 goes into 750 9 times with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 8317.59
Subtracting 729 from 750 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 9:
81 goes into 210 2 times with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 8317.592
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 10:
The number 81 fits into 480 5 times, leaving a remainder of 75.
Use 5 as the next digit of our solution. 
Result so far: 8317.5925
Subtract 405 from 480 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 11:
When dividing 750 by 81, we get 9 with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 8317.59259
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 12:
If we divide 210 by 81, we get 2 and a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 8317.592592
The remainder is 48 after subtracting 162 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 13:
When dividing 480 by 81, we get 5 with a remainder of 75.
Record the quotient 5 as the next digit in the result. 
Result so far: 8317.5925925
If we take 405 away from 480, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 14:
If we divide 750 by 81, we get 9 and a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 8317.59259259
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The final outcome is 8317.59259259, with a leftover of 2.1e-08.