86708821 divided by 729 
Our goal is to divide 86708821 by 729.

On to step 1:
If we divide 8 by 729, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 729

On to step 2:
If we divide 86 by 729, we get 0 and a remainder of 86.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Include the next digit (7) from the dividend after 86, then repeat: 867 / 729

On to step 3:
When dividing 867 by 729, we get 1 with a remainder of 138.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 729 from 867 to get 138.
Fetch the next digit (0) from the dividend, attach it to 138 and continue: 1380 / 729

Step 4:
729 can be fit into 1380 1 times, resulting in a remainder of 651.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 729 from 1380, we get 651.
Bring next digit (8) of the dividend behind the 651 and repeat the process: 6518 / 729

Let's proceed to step 5:
The number 729 fits into 6518 8 times, leaving a remainder of 686.
Record the quotient 8 as the next digit in the result. 
Result so far: 118.0
The remainder is 686 after subtracting 5832 from 6518.
Grab the next digit (8) from the dividend, add it to 686, then carry on: 6868 / 729

Advancing to step 6:
The number 729 fits into 6868 9 times, leaving a remainder of 307.
Put 9 as the next digit of the answer. 
Result so far: 1189.0
Deduct 6561 from 6868 and we're left with 307.
Bring next digit (2) of the dividend behind the 307 and repeat the process: 3072 / 729

Moving on to step 7:
729 goes into 3072 4 times with a remainder of 156.
Record the quotient 4 as the next digit in the result. 
Result so far: 11894.0
Subtracting 2916 from 3072 leaves us with 156.
Include the next digit (1) from the dividend after 156, then repeat: 1561 / 729

Moving on to step 8:
The number 729 fits into 1561 2 times, leaving a remainder of 103.
The next digit of our result is 2. 
Result so far: 118942.0
Subtract 1458 from 1561 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 9:
1030 divided by 729 is 1 with a remainder of 301.
Record the quotient 1 as the next digit in the result. 
Result so far: 118942.1
Deduct 729 from 1030 and we're left with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Advancing to step 10:
If we divide 3010 by 729, we get 4 and a remainder of 94.
Put 4 as the next digit of the answer. 
Result so far: 118942.14
The remainder is 94 after subtracting 2916 from 3010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Advancing to step 11:
When dividing 940 by 729, we get 1 with a remainder of 211.
Record the quotient 1 as the next digit in the result. 
Result so far: 118942.141
Deduct 729 from 940 and we're left with 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Let's proceed to step 12:
2110 divided by 729 is 2 with a remainder of 652.
The number 2 becomes the next digit in our result. 
Result so far: 118942.1412
If we subtract 1458 from 2110, we get 652.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6520, and continue the process.

Let's proceed to step 13:
If we divide 6520 by 729, we get 8 and a remainder of 688.
Write down 8 as next digit of the result. 
Result so far: 118942.14128
If we take 5832 away from 6520, we end up with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Moving on to step 14:
If we divide 6880 by 729, we get 9 and a remainder of 319.
Put 9 as the next digit of the answer. 
Result so far: 118942.141289
The remainder is 319 after subtracting 6561 from 6880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Step 15:
The number 729 fits into 3190 4 times, leaving a remainder of 274.
Write down 4 as next digit of the result. 
Result so far: 118942.1412894
Deduct 2916 from 3190 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Moving on to step 16:
If we divide 2740 by 729, we get 3 and a remainder of 553.
The number 3 becomes the next digit in our result. 
Result so far: 118942.14128943
Deduct 2187 from 2740 and we're left with 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

The final outcome is 118942.14128943, with a leftover of 5.53e-07.