35085157 ÷ 399 
Our goal is to divide 35085157 by 399.

Going ahead to step 1:
399 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 399

Moving on to step 2:
399 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Grab the next digit (0) from the dividend, add it to 35, then carry on: 350 / 399

Moving on to step 3:
When dividing 350 by 399, we get 0 with a remainder of 350.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 350, we end up with 350.
Append the next digit (8) from the dividend to 350 and continue with: 3508 / 399

Step 4:
3508 divided by 399 is 8 with a remainder of 316.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 3192 from 3508 leaves us with 316.
Take the next digit (5) from the dividend and append it to 316, then repeat: 3165 / 399

Advancing to step 5:
The number 399 fits into 3165 7 times, leaving a remainder of 372.
Write down 7 as next digit of the result. 
Result so far: 87.0
Subtract 2793 from 3165 to get 372.
Append the next digit (1) from the dividend to 372 and continue with: 3721 / 399

Step 6:
399 can be fit into 3721 9 times, resulting in a remainder of 130.
The next digit of our result is 9. 
Result so far: 879.0
The remainder is 130 after subtracting 3591 from 3721.
Append the next digit (5) from the dividend to 130 and continue with: 1305 / 399

Step 7:
The number 399 fits into 1305 3 times, leaving a remainder of 108.
Put 3 as the next digit of the answer. 
Result so far: 8793.0
The remainder is 108 after subtracting 1197 from 1305.
Include the next digit (7) from the dividend after 108, then repeat: 1087 / 399

Let's proceed to step 8:
If we divide 1087 by 399, we get 2 and a remainder of 289.
Use 2 as the next digit of our solution. 
Result so far: 87932.0
Subtract 798 from 1087 to get 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

On to step 9:
If we divide 2890 by 399, we get 7 and a remainder of 97.
Put 7 as the next digit of the answer. 
Result so far: 87932.7
If we take 2793 away from 2890, we end up with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Let's proceed to step 10:
399 goes into 970 2 times with a remainder of 172.
Use 2 as the next digit of our solution. 
Result so far: 87932.72
Deduct 798 from 970 and we're left with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Advancing to step 11:
399 goes into 1720 4 times with a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 87932.724
If we subtract 1596 from 1720, we get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Let's proceed to step 12:
If we divide 1240 by 399, we get 3 and a remainder of 43.
Record the quotient 3 as the next digit in the result. 
Result so far: 87932.7243
The remainder is 43 after subtracting 1197 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 13:
When dividing 430 by 399, we get 1 with a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 87932.72431
Deduct 399 from 430 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 14:
310 divided by 399 is 0 with a remainder of 310.
Write down 0 as next digit of the result. 
Result so far: 87932.72431
Subtract 0 from 310 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 15:
399 goes into 3100 7 times with a remainder of 307.
The number 7 becomes the next digit in our result. 
Result so far: 87932.7243107
Subtract 2793 from 3100 to get 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Step 16:
3070 divided by 399 is 7 with a remainder of 277.
The next digit of our result is 7. 
Result so far: 87932.72431077
Subtract 2793 from 3070 to get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

After the division, we end up with 87932.72431077 and a remainder of 2.77e-07.