We divide 86107007 by 398
Our goal is to divide 86107007 by 398.

On to step 1:
If we divide 8 by 398, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 398

On to step 2:
When dividing 86 by 398, we get 0 with a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 398

Moving on to step 3:
When dividing 861 by 398, we get 2 with a remainder of 65.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 796 from 861 leaves us with 65.
Grab the next digit (0) from the dividend, add it to 65, then carry on: 650 / 398

Advancing to step 4:
650 divided by 398 is 1 with a remainder of 252.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtract 398 from 650 to get 252.
Grab the next digit (7) from the dividend, add it to 252, then carry on: 2527 / 398

Going ahead to step 5:
When dividing 2527 by 398, we get 6 with a remainder of 139.
The number 6 becomes the next digit in our result. 
Result so far: 216.0
Subtract 2388 from 2527 to get 139.
Take the next digit (0) from the dividend and append it to 139, then repeat: 1390 / 398

Let's proceed to step 6:
1390 divided by 398 is 3 with a remainder of 196.
Write down 3 as next digit of the result. 
Result so far: 2163.0
Subtracting 1194 from 1390 leaves us with 196.
Bring next digit (0) of the dividend behind the 196 and repeat the process: 1960 / 398

Step 7:
The number 398 fits into 1960 4 times, leaving a remainder of 368.
Write down 4 as next digit of the result. 
Result so far: 21634.0
Deduct 1592 from 1960 and we're left with 368.
Grab the next digit (7) from the dividend, add it to 368, then carry on: 3687 / 398

Moving on to step 8:
The number 398 fits into 3687 9 times, leaving a remainder of 105.
Use 9 as the next digit of our solution. 
Result so far: 216349.0
If we take 3582 away from 3687, we end up with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 9:
1050 divided by 398 is 2 with a remainder of 254.
The number 2 becomes the next digit in our result. 
Result so far: 216349.2
The remainder is 254 after subtracting 796 from 1050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Let's proceed to step 10:
2540 divided by 398 is 6 with a remainder of 152.
The number 6 becomes the next digit in our result. 
Result so far: 216349.26
Subtracting 2388 from 2540 leaves us with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Going ahead to step 11:
398 goes into 1520 3 times with a remainder of 326.
The next digit of our result is 3. 
Result so far: 216349.263
Deduct 1194 from 1520 and we're left with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Advancing to step 12:
3260 divided by 398 is 8 with a remainder of 76.
Use 8 as the next digit of our solution. 
Result so far: 216349.2638
If we take 3184 away from 3260, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 13:
If we divide 760 by 398, we get 1 and a remainder of 362.
The next digit of our result is 1. 
Result so far: 216349.26381
If we subtract 398 from 760, we get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 14:
3620 divided by 398 is 9 with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 216349.263819
Deduct 3582 from 3620 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 15:
380 divided by 398 is 0 with a remainder of 380.
Write down 0 as next digit of the result. 
Result so far: 216349.263819
If we subtract 0 from 380, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 16:
The number 398 fits into 3800 9 times, leaving a remainder of 218.
The number 9 becomes the next digit in our result. 
Result so far: 216349.26381909
If we subtract 3582 from 3800, we get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

After the division, we end up with 216349.26381909 and a remainder of 2.18e-07.