Let's divide 86816354 by 648
We're looking to find how many times 648 goes into 86816354.

Step 1:
If we divide 8 by 648, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 648

Moving on to step 2:
648 goes into 86 0 times with 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.
Fetch the next digit (8) from the dividend, attach it to 86 and continue: 868 / 648

Step 3:
The number 648 fits into 868 1 times, leaving a remainder of 220.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 648 from 868 to get 220.
Include the next digit (1) from the dividend after 220, then repeat: 2201 / 648

Step 4:
The number 648 fits into 2201 3 times, leaving a remainder of 257.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 1944 from 2201 to get 257.
Bring next digit (6) of the dividend behind the 257 and repeat the process: 2576 / 648

Advancing to step 5:
648 goes into 2576 3 times with a remainder of 632.
The next digit of our result is 3. 
Result so far: 133.0
The remainder is 632 after subtracting 1944 from 2576.
Append the next digit (3) from the dividend to 632 and continue with: 6323 / 648

Step 6:
The number 648 fits into 6323 9 times, leaving a remainder of 491.
Write down 9 as next digit of the result. 
Result so far: 1339.0
Subtracting 5832 from 6323 leaves us with 491.
Take the next digit (5) from the dividend and append it to 491, then repeat: 4915 / 648

Going ahead to step 7:
The number 648 fits into 4915 7 times, leaving a remainder of 379.
Put 7 as the next digit of the answer. 
Result so far: 13397.0
Subtract 4536 from 4915 to get 379.
Fetch the next digit (4) from the dividend, attach it to 379 and continue: 3794 / 648

Let's proceed to step 8:
3794 divided by 648 is 5 with a remainder of 554.
Use 5 as the next digit of our solution. 
Result so far: 133975.0
Deduct 3240 from 3794 and we're left with 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 9:
648 can be fit into 5540 8 times, resulting in a remainder of 356.
Use 8 as the next digit of our solution. 
Result so far: 133975.8
If we subtract 5184 from 5540, we get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Let's proceed to step 10:
If we divide 3560 by 648, we get 5 and a remainder of 320.
Put 5 as the next digit of the answer. 
Result so far: 133975.85
If we subtract 3240 from 3560, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 11:
3200 divided by 648 is 4 with a remainder of 608.
The number 4 becomes the next digit in our result. 
Result so far: 133975.854
Deduct 2592 from 3200 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

Let's proceed to step 12:
648 goes into 6080 9 times with a remainder of 248.
Write down 9 as next digit of the result. 
Result so far: 133975.8549
The remainder is 248 after subtracting 5832 from 6080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 13:
If we divide 2480 by 648, we get 3 and a remainder of 536.
Record the quotient 3 as the next digit in the result. 
Result so far: 133975.85493
If we take 1944 away from 2480, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

On to step 14:
The number 648 fits into 5360 8 times, leaving a remainder of 176.
The number 8 becomes the next digit in our result. 
Result so far: 133975.854938
Subtract 5184 from 5360 to get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Moving on to step 15:
The number 648 fits into 1760 2 times, leaving a remainder of 464.
Write down 2 as next digit of the result. 
Result so far: 133975.8549382
The remainder is 464 after subtracting 1296 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Step 16:
648 goes into 4640 7 times with a remainder of 104.
The number 7 becomes the next digit in our result. 
Result so far: 133975.85493827
The remainder is 104 after subtracting 4536 from 4640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

After the division, we end up with 133975.85493827 and a remainder of 1.04e-07.