86124261 ÷ 389 
We want to divide 86124261 by 389.

Step 1:
When dividing 8 by 389, we get 0 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 / 389

On to step 2:
If we divide 86 by 389, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Include the next digit (1) from the dividend after 86, then repeat: 861 / 389

Advancing to step 3:
If we divide 861 by 389, we get 2 and a remainder of 83.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 778 away from 861, we end up with 83.
Append the next digit (2) from the dividend to 83 and continue with: 832 / 389

Advancing to step 4:
389 goes into 832 2 times with a remainder of 54.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we take 778 away from 832, we end up with 54.
Bring next digit (4) of the dividend behind the 54 and repeat the process: 544 / 389

Moving on to step 5:
The number 389 fits into 544 1 times, leaving a remainder of 155.
The next digit of our result is 1. 
Result so far: 221.0
The remainder is 155 after subtracting 389 from 544.
Append the next digit (2) from the dividend to 155 and continue with: 1552 / 389

Step 6:
The number 389 fits into 1552 3 times, leaving a remainder of 385.
Use 3 as the next digit of our solution. 
Result so far: 2213.0
The remainder is 385 after subtracting 1167 from 1552.
Fetch the next digit (6) from the dividend, attach it to 385 and continue: 3856 / 389

Let's proceed to step 7:
The number 389 fits into 3856 9 times, leaving a remainder of 355.
The number 9 becomes the next digit in our result. 
Result so far: 22139.0
The remainder is 355 after subtracting 3501 from 3856.
Include the next digit (1) from the dividend after 355, then repeat: 3551 / 389

Going ahead to step 8:
The number 389 fits into 3551 9 times, leaving a remainder of 50.
The next digit of our result is 9. 
Result so far: 221399.0
The remainder is 50 after subtracting 3501 from 3551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 9:
When dividing 500 by 389, we get 1 with a remainder of 111.
The number 1 becomes the next digit in our result. 
Result so far: 221399.1
If we take 389 away from 500, we end up with 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1110, and continue the process.

Step 10:
When dividing 1110 by 389, we get 2 with a remainder of 332.
Put 2 as the next digit of the answer. 
Result so far: 221399.12
Deduct 778 from 1110 and we're left with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Going ahead to step 11:
If we divide 3320 by 389, we get 8 and a remainder of 208.
The number 8 becomes the next digit in our result. 
Result so far: 221399.128
The remainder is 208 after subtracting 3112 from 3320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Step 12:
If we divide 2080 by 389, we get 5 and a remainder of 135.
The number 5 becomes the next digit in our result. 
Result so far: 221399.1285
If we subtract 1945 from 2080, we get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 13:
389 can be fit into 1350 3 times, resulting in a remainder of 183.
The number 3 becomes the next digit in our result. 
Result so far: 221399.12853
Subtracting 1167 from 1350 leaves us with 183.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1830, and continue the process.

Advancing to step 14:
1830 divided by 389 is 4 with a remainder of 274.
Use 4 as the next digit of our solution. 
Result so far: 221399.128534
If we take 1556 away from 1830, we end up 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.

Let's proceed to step 15:
2740 divided by 389 is 7 with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 221399.1285347
Subtracting 2723 from 2740 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 16:
170 divided by 389 is 0 with a remainder of 170.
The number 0 becomes the next digit in our result. 
Result so far: 221399.1285347
Deduct 0 from 170 and we're left with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

In conclusion, the division gives 221399.1285347 with a balance of 1.7e-07.