86126378 ÷ 170 
Let's see how many times 170 fits into 86126378.

Advancing to step 1:
170 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 170

Moving on to step 2:
If we divide 86 by 170, we get 0 and a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Grab the next digit (1) from the dividend, add it to 86, then carry on: 861 / 170

Let's proceed to step 3:
When dividing 861 by 170, we get 5 with a remainder of 11.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we take 850 away from 861, we end up with 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 170

On to step 4:
When dividing 112 by 170, we get 0 with a remainder of 112.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
The remainder is 112 after subtracting 0 from 112.
Fetch the next digit (6) from the dividend, attach it to 112 and continue: 1126 / 170

Advancing to step 5:
If we divide 1126 by 170, we get 6 and a remainder of 106.
The next digit of our result is 6. 
Result so far: 506.0
Deduct 1020 from 1126 and we're left with 106.
Fetch the next digit (3) from the dividend, attach it to 106 and continue: 1063 / 170

Step 6:
If we divide 1063 by 170, we get 6 and a remainder of 43.
The number 6 becomes the next digit in our result. 
Result so far: 5066.0
The remainder is 43 after subtracting 1020 from 1063.
Bring next digit (7) of the dividend behind the 43 and repeat the process: 437 / 170

Step 7:
When dividing 437 by 170, we get 2 with a remainder of 97.
Put 2 as the next digit of the answer. 
Result so far: 50662.0
The remainder is 97 after subtracting 340 from 437.
Take the next digit (8) from the dividend and append it to 97, then repeat: 978 / 170

Let's proceed to step 8:
If we divide 978 by 170, we get 5 and a remainder of 128.
The next digit of our result is 5. 
Result so far: 506625.0
Subtract 850 from 978 to get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 9:
1280 divided by 170 is 7 with a remainder of 90.
The next digit of our result is 7. 
Result so far: 506625.7
Subtracting 1190 from 1280 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 10:
170 can be fit into 900 5 times, resulting in a remainder of 50.
The next digit of our result is 5. 
Result so far: 506625.75
Subtracting 850 from 900 leaves us 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.

Going ahead to step 11:
If we divide 500 by 170, we get 2 and a remainder of 160.
Write down 2 as next digit of the result. 
Result so far: 506625.752
Subtracting 340 from 500 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Let's proceed to step 12:
170 goes into 1600 9 times with a remainder of 70.
Put 9 as the next digit of the answer. 
Result so far: 506625.7529
If we take 1530 away from 1600, 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.

Moving on to step 13:
170 goes into 700 4 times with a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 506625.75294
If we take 680 away from 700, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 14:
When dividing 200 by 170, we get 1 with a remainder of 30.
The next digit of our result is 1. 
Result so far: 506625.752941
The remainder is 30 after subtracting 170 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 15:
If we divide 300 by 170, we get 1 and a remainder of 130.
Use 1 as the next digit of our solution. 
Result so far: 506625.7529411
If we take 170 away from 300, we end up with 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

In conclusion, the division gives 506625.7529411 with a balance of 1.3e-06.