86109415 divided by 355 
We want to figure out the number of times 86109415 can be divided by 355.

Let's proceed to step 1:
355 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 355

On to step 2:
The number 355 fits into 86 0 times, leaving 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.
Bring next digit (1) of the dividend behind the 86 and repeat the process: 861 / 355

Going ahead to step 3:
The number 355 fits into 861 2 times, leaving a remainder of 151.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 151 after subtracting 710 from 861.
Grab the next digit (0) from the dividend, add it to 151, then carry on: 1510 / 355

Let's proceed to step 4:
The number 355 fits into 1510 4 times, leaving a remainder of 90.
The next digit of our result is 4. 
Result so far: 24.0
Deduct 1420 from 1510 and we're left with 90.
Include the next digit (9) from the dividend after 90, then repeat: 909 / 355

Advancing to step 5:
When dividing 909 by 355, we get 2 with a remainder of 199.
The number 2 becomes the next digit in our result. 
Result so far: 242.0
Subtract 710 from 909 to get 199.
Append the next digit (4) from the dividend to 199 and continue with: 1994 / 355

On to step 6:
When dividing 1994 by 355, we get 5 with a remainder of 219.
Put 5 as the next digit of the answer. 
Result so far: 2425.0
Subtract 1775 from 1994 to get 219.
Bring next digit (1) of the dividend behind the 219 and repeat the process: 2191 / 355

Moving on to step 7:
If we divide 2191 by 355, we get 6 and a remainder of 61.
Write down 6 as next digit of the result. 
Result so far: 24256.0
Deduct 2130 from 2191 and we're left with 61.
Bring next digit (5) of the dividend behind the 61 and repeat the process: 615 / 355

Let's proceed to step 8:
The number 355 fits into 615 1 times, leaving a remainder of 260.
Put 1 as the next digit of the answer. 
Result so far: 242561.0
Deduct 355 from 615 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 9:
355 goes into 2600 7 times with a remainder of 115.
Record the quotient 7 as the next digit in the result. 
Result so far: 242561.7
The remainder is 115 after subtracting 2485 from 2600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 10:
355 goes into 1150 3 times with a remainder of 85.
Put 3 as the next digit of the answer. 
Result so far: 242561.73
Deduct 1065 from 1150 and we're left with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 11:
850 divided by 355 is 2 with a remainder of 140.
The next digit of our result is 2. 
Result so far: 242561.732
Subtract 710 from 850 to get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 12:
355 can be fit into 1400 3 times, resulting in a remainder of 335.
Use 3 as the next digit of our solution. 
Result so far: 242561.7323
If we subtract 1065 from 1400, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Let's proceed to step 13:
When dividing 3350 by 355, we get 9 with a remainder of 155.
Write down 9 as next digit of the result. 
Result so far: 242561.73239
Subtracting 3195 from 3350 leaves us with 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Moving on to step 14:
The number 355 fits into 1550 4 times, leaving a remainder of 130.
Record the quotient 4 as the next digit in the result. 
Result so far: 242561.732394
If we take 1420 away from 1550, 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.

Advancing to step 15:
If we divide 1300 by 355, we get 3 and a remainder of 235.
Put 3 as the next digit of the answer. 
Result so far: 242561.7323943
If we subtract 1065 from 1300, we get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Advancing to step 16:
2350 divided by 355 is 6 with a remainder of 220.
Record the quotient 6 as the next digit in the result. 
Result so far: 242561.73239436
If we take 2130 away from 2350, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final result is 242561.73239436 with a remainder of 2.2e-07.