We look at the division of 70099931 by 408 
Our goal is to divide 70099931 by 408.

Let's proceed to step 1:
If we divide 7 by 408, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 408

Let's proceed to step 2:
If we divide 70 by 408, we get 0 and a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 70 after subtracting 0 from 70.
Fetch the next digit (0) from the dividend, attach it to 70 and continue: 700 / 408

Moving on to step 3:
408 can be fit into 700 1 times, resulting in a remainder of 292.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 408 from 700 to get 292.
Bring next digit (9) of the dividend behind the 292 and repeat the process: 2929 / 408

Advancing to step 4:
408 can be fit into 2929 7 times, resulting in a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
The remainder is 73 after subtracting 2856 from 2929.
Bring next digit (9) of the dividend behind the 73 and repeat the process: 739 / 408

On to step 5:
The number 408 fits into 739 1 times, leaving a remainder of 331.
Put 1 as the next digit of the answer. 
Result so far: 171.0
If we subtract 408 from 739, we get 331.
Grab the next digit (9) from the dividend, add it to 331, then carry on: 3319 / 408

On to step 6:
3319 divided by 408 is 8 with a remainder of 55.
Record the quotient 8 as the next digit in the result. 
Result so far: 1718.0
If we take 3264 away from 3319, we end up with 55.
Include the next digit (3) from the dividend after 55, then repeat: 553 / 408

Advancing to step 7:
If we divide 553 by 408, we get 1 and a remainder of 145.
The number 1 becomes the next digit in our result. 
Result so far: 17181.0
Subtracting 408 from 553 leaves us with 145.
Include the next digit (1) from the dividend after 145, then repeat: 1451 / 408

Step 8:
408 goes into 1451 3 times with a remainder of 227.
Put 3 as the next digit of the answer. 
Result so far: 171813.0
If we subtract 1224 from 1451, we get 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Step 9:
When dividing 2270 by 408, we get 5 with a remainder of 230.
Write down 5 as next digit of the result. 
Result so far: 171813.5
Subtract 2040 from 2270 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 10:
If we divide 2300 by 408, we get 5 and a remainder of 260.
Use 5 as the next digit of our solution. 
Result so far: 171813.55
If we take 2040 away from 2300, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

In conclusion, the division gives 171813.55 with a balance of 0.26.