39990254 ÷ 830 
Let's see how many times 830 fits into 39990254.

Moving on to step 1:
If we divide 3 by 830, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (9) from the dividend after 3, then repeat: 39 / 830

Going ahead to step 2:
If we divide 39 by 830, we get 0 and a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 39 leaves us with 39.
Bring next digit (9) of the dividend behind the 39 and repeat the process: 399 / 830

Going ahead to step 3:
The number 830 fits into 399 0 times, leaving a remainder of 399.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 399 leaves us with 399.
Bring next digit (9) of the dividend behind the 399 and repeat the process: 3999 / 830

Advancing to step 4:
830 goes into 3999 4 times with a remainder of 679.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we take 3320 away from 3999, we end up with 679.
Grab the next digit (0) from the dividend, add it to 679, then carry on: 6790 / 830

Let's proceed to step 5:
If we divide 6790 by 830, we get 8 and a remainder of 150.
Put 8 as the next digit of the answer. 
Result so far: 48.0
If we subtract 6640 from 6790, we get 150.
Bring next digit (2) of the dividend behind the 150 and repeat the process: 1502 / 830

Let's proceed to step 6:
If we divide 1502 by 830, we get 1 and a remainder of 672.
Record the quotient 1 as the next digit in the result. 
Result so far: 481.0
If we take 830 away from 1502, we end up with 672.
Bring next digit (5) of the dividend behind the 672 and repeat the process: 6725 / 830

Moving on to step 7:
The number 830 fits into 6725 8 times, leaving a remainder of 85.
Write down 8 as next digit of the result. 
Result so far: 4818.0
If we take 6640 away from 6725, we end up with 85.
Include the next digit (4) from the dividend after 85, then repeat: 854 / 830

Moving on to step 8:
If we divide 854 by 830, we get 1 and a remainder of 24.
The next digit of our result is 1. 
Result so far: 48181.0
The remainder is 24 after subtracting 830 from 854.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 9:
830 can be fit into 240 0 times, resulting in a remainder of 240.
Write down 0 as next digit of the result. 
Result so far: 48181.0
Deduct 0 from 240 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Advancing to step 10:
The number 830 fits into 2400 2 times, leaving a remainder of 740.
Use 2 as the next digit of our solution. 
Result so far: 48181.02
If we subtract 1660 from 2400, we get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Step 11:
If we divide 7400 by 830, we get 8 and a remainder of 760.
Use 8 as the next digit of our solution. 
Result so far: 48181.028
Subtract 6640 from 7400 to get 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7600, and continue the process.

Step 12:
The number 830 fits into 7600 9 times, leaving a remainder of 130.
Use 9 as the next digit of our solution. 
Result so far: 48181.0289
Subtract 7470 from 7600 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 13:
If we divide 1300 by 830, we get 1 and a remainder of 470.
Record the quotient 1 as the next digit in the result. 
Result so far: 48181.02891
Subtracting 830 from 1300 leaves us with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 14:
4700 divided by 830 is 5 with a remainder of 550.
Use 5 as the next digit of our solution. 
Result so far: 48181.028915
The remainder is 550 after subtracting 4150 from 4700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Moving on to step 15:
When dividing 5500 by 830, we get 6 with a remainder of 520.
Write down 6 as next digit of the result. 
Result so far: 48181.0289156
Subtract 4980 from 5500 to get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 16:
830 can be fit into 5200 6 times, resulting in a remainder of 220.
Write down 6 as next digit of the result. 
Result so far: 48181.02891566
If we subtract 4980 from 5200, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final outcome is 48181.02891566, with a leftover of 2.2e-07.