We divide 86438554 by 836
We want to figure out the number of times 86438554 can be divided by 836.

Advancing to step 1:
836 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 836

Let's proceed to step 2:
If we divide 86 by 836, we get 0 and a remainder of 86.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Append the next digit (4) from the dividend to 86 and continue with: 864 / 836

Moving on to step 3:
The number 836 fits into 864 1 times, leaving a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
If we take 836 away from 864, we end up with 28.
Fetch the next digit (3) from the dividend, attach it to 28 and continue: 283 / 836

Going ahead to step 4:
If we divide 283 by 836, we get 0 and a remainder of 283.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 283, we get 283.
Take the next digit (8) from the dividend and append it to 283, then repeat: 2838 / 836

On to step 5:
When dividing 2838 by 836, we get 3 with a remainder of 330.
Write down 3 as next digit of the result. 
Result so far: 103.0
Subtracting 2508 from 2838 leaves us with 330.
Include the next digit (5) from the dividend after 330, then repeat: 3305 / 836

Step 6:
The number 836 fits into 3305 3 times, leaving a remainder of 797.
Use 3 as the next digit of our solution. 
Result so far: 1033.0
If we take 2508 away from 3305, we end up with 797.
Include the next digit (5) from the dividend after 797, then repeat: 7975 / 836

On to step 7:
If we divide 7975 by 836, we get 9 and a remainder of 451.
The number 9 becomes the next digit in our result. 
Result so far: 10339.0
If we take 7524 away from 7975, we end up with 451.
Include the next digit (4) from the dividend after 451, then repeat: 4514 / 836

On to step 8:
4514 divided by 836 is 5 with a remainder of 334.
Use 5 as the next digit of our solution. 
Result so far: 103395.0
The remainder is 334 after subtracting 4180 from 4514.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Advancing to step 9:
The number 836 fits into 3340 3 times, leaving a remainder of 832.
Put 3 as the next digit of the answer. 
Result so far: 103395.3
The remainder is 832 after subtracting 2508 from 3340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Let's proceed to step 10:
8320 divided by 836 is 9 with a remainder of 796.
The next digit of our result is 9. 
Result so far: 103395.39
The remainder is 796 after subtracting 7524 from 8320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Let's proceed to step 11:
The number 836 fits into 7960 9 times, leaving a remainder of 436.
Record the quotient 9 as the next digit in the result. 
Result so far: 103395.399
The remainder is 436 after subtracting 7524 from 7960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

The final outcome is 103395.399, with a leftover of 0.0436.