68458135 ÷ 800 
Let's see how many times 800 fits into 68458135.

Going ahead to step 1:
800 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (8) from the dividend, attach it to 6 and continue: 68 / 800

Moving on to step 2:
When dividing 68 by 800, we get 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 68 after subtracting 0 from 68.
Fetch the next digit (4) from the dividend, attach it to 68 and continue: 684 / 800

Advancing to step 3:
The number 800 fits into 684 0 times, leaving a remainder of 684.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 684, we get 684.
Bring next digit (5) of the dividend behind the 684 and repeat the process: 6845 / 800

Going ahead to step 4:
800 goes into 6845 8 times with a remainder of 445.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 6400 from 6845 leaves us with 445.
Bring next digit (8) of the dividend behind the 445 and repeat the process: 4458 / 800

Let's proceed to step 5:
800 goes into 4458 5 times with a remainder of 458.
Write down 5 as next digit of the result. 
Result so far: 85.0
Subtracting 4000 from 4458 leaves us with 458.
Fetch the next digit (1) from the dividend, attach it to 458 and continue: 4581 / 800

Advancing to step 6:
800 can be fit into 4581 5 times, resulting in a remainder of 581.
The number 5 becomes the next digit in our result. 
Result so far: 855.0
Subtracting 4000 from 4581 leaves us with 581.
Fetch the next digit (3) from the dividend, attach it to 581 and continue: 5813 / 800

Moving on to step 7:
800 goes into 5813 7 times with a remainder of 213.
Write down 7 as next digit of the result. 
Result so far: 8557.0
The remainder is 213 after subtracting 5600 from 5813.
Grab the next digit (5) from the dividend, add it to 213, then carry on: 2135 / 800

Let's proceed to step 8:
If we divide 2135 by 800, we get 2 and a remainder of 535.
Put 2 as the next digit of the answer. 
Result so far: 85572.0
The remainder is 535 after subtracting 1600 from 2135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Step 9:
800 can be fit into 5350 6 times, resulting in a remainder of 550.
Use 6 as the next digit of our solution. 
Result so far: 85572.6
If we subtract 4800 from 5350, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Advancing to step 10:
800 goes into 5500 6 times with a remainder of 700.
The number 6 becomes the next digit in our result. 
Result so far: 85572.66
Subtracting 4800 from 5500 leaves us with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Our division results in 85572.66 with a remaining 0.7.