129300 ÷ 85 
We're looking to find how many times 85 goes into 129300.

Advancing to step 1:
1 divided by 85 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 85

Moving on to step 2:
When dividing 12 by 85, we get 0 with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 85

Let's proceed to step 3:
If we divide 129 by 85, we get 1 and a remainder of 44.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 44 after subtracting 85 from 129.
Take the next digit (3) from the dividend and append it to 44, then repeat: 443 / 85

Let's proceed to step 4:
443 divided by 85 is 5 with a remainder of 18.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 425 from 443 to get 18.
Include the next digit (0) from the dividend after 18, then repeat: 180 / 85

Moving on to step 5:
When dividing 180 by 85, we get 2 with a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 152.0
Subtract 170 from 180 to get 10.
Append the next digit (0) from the dividend to 10 and continue with: 100 / 85

Going ahead to step 6:
100 divided by 85 is 1 with a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 1521.0
Subtracting 85 from 100 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 7:
85 goes into 150 1 times with a remainder of 65.
The next digit of our result is 1. 
Result so far: 1521.1
Subtracting 85 from 150 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 8:
When dividing 650 by 85, we get 7 with a remainder of 55.
The number 7 becomes the next digit in our result. 
Result so far: 1521.17
Deduct 595 from 650 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 9:
The number 85 fits into 550 6 times, leaving a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 1521.176
If we subtract 510 from 550, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
85 can be fit into 400 4 times, resulting in a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 1521.1764
The remainder is 60 after subtracting 340 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
If we divide 600 by 85, we get 7 and a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 1521.17647
Subtract 595 from 600 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
50 divided by 85 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 1521.17647
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 13:
When dividing 500 by 85, we get 5 with a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 1521.1764705
Subtract 425 from 500 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.

Moving on to step 14:
85 can be fit into 750 8 times, resulting in a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 1521.17647058
If we take 680 away from 750, we end up 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.

The final outcome is 1521.17647058, with a leftover of 7e-08.