We're dividing 86399655 by 50 
Let's see how many times 50 fits into 86399655.

Let's proceed to step 1:
When dividing 8 by 50, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 50

On to step 2:
86 divided by 50 is 1 with a remainder of 36.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 50 from 86 and we're left with 36.
Bring next digit (3) of the dividend behind the 36 and repeat the process: 363 / 50

On to step 3:
50 can be fit into 363 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 350 from 363 to get 13.
Take the next digit (9) from the dividend and append it to 13, then repeat: 139 / 50

Advancing to step 4:
The number 50 fits into 139 2 times, leaving a remainder of 39.
Write down 2 as next digit of the result. 
Result so far: 172.0
If we take 100 away from 139, we end up with 39.
Grab the next digit (9) from the dividend, add it to 39, then carry on: 399 / 50

Moving on to step 5:
399 divided by 50 is 7 with a remainder of 49.
Record the quotient 7 as the next digit in the result. 
Result so far: 1727.0
The remainder is 49 after subtracting 350 from 399.
Fetch the next digit (6) from the dividend, attach it to 49 and continue: 496 / 50

Going ahead to step 6:
50 can be fit into 496 9 times, resulting in a remainder of 46.
Write down 9 as next digit of the result. 
Result so far: 17279.0
If we subtract 450 from 496, we get 46.
Fetch the next digit (5) from the dividend, attach it to 46 and continue: 465 / 50

Step 7:
50 can be fit into 465 9 times, resulting in a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 172799.0
The remainder is 15 after subtracting 450 from 465.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 50

Moving on to step 8:
50 can be fit into 155 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 1727993.0
Subtract 150 from 155 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 9:
If we divide 50 by 50, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 1727993.1
If we subtract 50 from 50, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
50 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 1727993.1
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
50 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1727993.1
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 1727993.1 and a remainder of 0.0.