99850864 ÷ 707 
We want to divide 99850864 by 707.

Step 1:
If we divide 9 by 707, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 707

Step 2:
707 can be fit into 99 0 times, resulting in a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Append the next digit (8) from the dividend to 99 and continue with: 998 / 707

Step 3:
If we divide 998 by 707, we get 1 and a remainder of 291.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 291 after subtracting 707 from 998.
Bring next digit (5) of the dividend behind the 291 and repeat the process: 2915 / 707

On to step 4:
707 goes into 2915 4 times with a remainder of 87.
The next digit of our result is 4. 
Result so far: 14.0
Deduct 2828 from 2915 and we're left with 87.
Append the next digit (0) from the dividend to 87 and continue with: 870 / 707

Moving on to step 5:
707 goes into 870 1 times with a remainder of 163.
Write down 1 as next digit of the result. 
Result so far: 141.0
Subtracting 707 from 870 leaves us with 163.
Bring next digit (8) of the dividend behind the 163 and repeat the process: 1638 / 707

Let's proceed to step 6:
The number 707 fits into 1638 2 times, leaving a remainder of 224.
Write down 2 as next digit of the result. 
Result so far: 1412.0
If we take 1414 away from 1638, we end up with 224.
Append the next digit (6) from the dividend to 224 and continue with: 2246 / 707

Going ahead to step 7:
707 can be fit into 2246 3 times, resulting in a remainder of 125.
The next digit of our result is 3. 
Result so far: 14123.0
If we take 2121 away from 2246, we end up with 125.
Take the next digit (4) from the dividend and append it to 125, then repeat: 1254 / 707

On to step 8:
707 can be fit into 1254 1 times, resulting in a remainder of 547.
The next digit of our result is 1. 
Result so far: 141231.0
If we take 707 away from 1254, we end up with 547.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5470, and continue the process.

Going ahead to step 9:
When dividing 5470 by 707, we get 7 with a remainder of 521.
Record the quotient 7 as the next digit in the result. 
Result so far: 141231.7
If we take 4949 away from 5470, we end up with 521.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5210, and continue the process.

Going ahead to step 10:
707 can be fit into 5210 7 times, resulting in a remainder of 261.
The number 7 becomes the next digit in our result. 
Result so far: 141231.77
Subtract 4949 from 5210 to get 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

The final outcome is 141231.77, with a leftover of 0.261.