86860128 ÷ 306 
We want to figure out the number of times 86860128 can be divided by 306.

Let's proceed to step 1:
306 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 306

Going ahead to step 2:
86 divided by 306 is 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Append the next digit (8) from the dividend to 86 and continue with: 868 / 306

On to step 3:
306 goes into 868 2 times with a remainder of 256.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 612 away from 868, we end up with 256.
Include the next digit (6) from the dividend after 256, then repeat: 2566 / 306

Moving on to step 4:
If we divide 2566 by 306, we get 8 and a remainder of 118.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
Subtract 2448 from 2566 to get 118.
Bring next digit (0) of the dividend behind the 118 and repeat the process: 1180 / 306

Going ahead to step 5:
1180 divided by 306 is 3 with a remainder of 262.
The number 3 becomes the next digit in our result. 
Result so far: 283.0
If we take 918 away from 1180, we end up with 262.
Include the next digit (1) from the dividend after 262, then repeat: 2621 / 306

Advancing to step 6:
306 can be fit into 2621 8 times, resulting in a remainder of 173.
Write down 8 as next digit of the result. 
Result so far: 2838.0
If we subtract 2448 from 2621, we get 173.
Fetch the next digit (2) from the dividend, attach it to 173 and continue: 1732 / 306

Going ahead to step 7:
306 goes into 1732 5 times with a remainder of 202.
The next digit of our result is 5. 
Result so far: 28385.0
Deduct 1530 from 1732 and we're left with 202.
Include the next digit (8) from the dividend after 202, then repeat: 2028 / 306

Advancing to step 8:
When dividing 2028 by 306, we get 6 with a remainder of 192.
The next digit of our result is 6. 
Result so far: 283856.0
Subtracting 1836 from 2028 leaves us with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 9:
The number 306 fits into 1920 6 times, leaving a remainder of 84.
Use 6 as the next digit of our solution. 
Result so far: 283856.6
Subtracting 1836 from 1920 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 10:
The number 306 fits into 840 2 times, leaving a remainder of 228.
Write down 2 as next digit of the result. 
Result so far: 283856.62
The remainder is 228 after subtracting 612 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Going ahead to step 11:
2280 divided by 306 is 7 with a remainder of 138.
Write down 7 as next digit of the result. 
Result so far: 283856.627
Deduct 2142 from 2280 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Moving on to step 12:
306 goes into 1380 4 times with a remainder of 156.
Put 4 as the next digit of the answer. 
Result so far: 283856.6274
If we take 1224 away from 1380, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

On to step 13:
If we divide 1560 by 306, we get 5 and a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 283856.62745
Deduct 1530 from 1560 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 14:
When dividing 300 by 306, we get 0 with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 283856.62745
If we subtract 0 from 300, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 15:
When dividing 3000 by 306, we get 9 with a remainder of 246.
Write down 9 as next digit of the result. 
Result so far: 283856.6274509
The remainder is 246 after subtracting 2754 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 16:
2460 divided by 306 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 283856.62745098
If we take 2448 away from 2460, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final result is 283856.62745098 with a remainder of 1.2e-08.