86497780 divided by 800 
Let's see how many times 800 fits into 86497780.

Step 1:
When dividing 8 by 800, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 800

Advancing to step 2:
The number 800 fits into 86 0 times, leaving a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Bring next digit (4) of the dividend behind the 86 and repeat the process: 864 / 800

Moving on to step 3:
If we divide 864 by 800, we get 1 and a remainder of 64.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 800 from 864 leaves us with 64.
Grab the next digit (9) from the dividend, add it to 64, then carry on: 649 / 800

Going ahead to step 4:
The number 800 fits into 649 0 times, leaving a remainder of 649.
Use 0 as the next digit of our solution. 
Result so far: 10.0
The remainder is 649 after subtracting 0 from 649.
Include the next digit (7) from the dividend after 649, then repeat: 6497 / 800

Going ahead to step 5:
The number 800 fits into 6497 8 times, leaving a remainder of 97.
The next digit of our result is 8. 
Result so far: 108.0
If we take 6400 away from 6497, we end up with 97.
Grab the next digit (7) from the dividend, add it to 97, then carry on: 977 / 800

Moving on to step 6:
800 can be fit into 977 1 times, resulting in a remainder of 177.
The number 1 becomes the next digit in our result. 
Result so far: 1081.0
Subtracting 800 from 977 leaves us with 177.
Grab the next digit (8) from the dividend, add it to 177, then carry on: 1778 / 800

Going ahead to step 7:
800 can be fit into 1778 2 times, resulting in a remainder of 178.
The next digit of our result is 2. 
Result so far: 10812.0
If we take 1600 away from 1778, we end up with 178.
Fetch the next digit (0) from the dividend, attach it to 178 and continue: 1780 / 800

Advancing to step 8:
1780 divided by 800 is 2 with a remainder of 180.
Write down 2 as next digit of the result. 
Result so far: 108122.0
Subtracting 1600 from 1780 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 9:
800 can be fit into 1800 2 times, resulting in a remainder of 200.
Record the quotient 2 as the next digit in the result. 
Result so far: 108122.2
The remainder is 200 after subtracting 1600 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 10:
800 goes into 2000 2 times with a remainder of 400.
Use 2 as the next digit of our solution. 
Result so far: 108122.22
Deduct 1600 from 2000 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 108122.22 and a remainder of 0.4.