We're dividing 35901436 by 399 
We want to figure out the number of times 35901436 can be divided by 399.

Step 1:
399 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 399

Advancing to step 2:
399 goes into 35 0 times with a remainder of 35.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 35 after subtracting 0 from 35.
Bring next digit (9) of the dividend behind the 35 and repeat the process: 359 / 399

Let's proceed to step 3:
399 can be fit into 359 0 times, resulting in a remainder of 359.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 359 after subtracting 0 from 359.
Fetch the next digit (0) from the dividend, attach it to 359 and continue: 3590 / 399

On to step 4:
3590 divided by 399 is 8 with a remainder of 398.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtract 3192 from 3590 to get 398.
Grab the next digit (1) from the dividend, add it to 398, then carry on: 3981 / 399

On to step 5:
The number 399 fits into 3981 9 times, leaving a remainder of 390.
Write down 9 as next digit of the result. 
Result so far: 89.0
If we subtract 3591 from 3981, we get 390.
Include the next digit (4) from the dividend after 390, then repeat: 3904 / 399

On to step 6:
3904 divided by 399 is 9 with a remainder of 313.
Put 9 as the next digit of the answer. 
Result so far: 899.0
The remainder is 313 after subtracting 3591 from 3904.
Fetch the next digit (3) from the dividend, attach it to 313 and continue: 3133 / 399

On to step 7:
3133 divided by 399 is 7 with a remainder of 340.
The next digit of our result is 7. 
Result so far: 8997.0
Subtracting 2793 from 3133 leaves us with 340.
Append the next digit (6) from the dividend to 340 and continue with: 3406 / 399

Let's proceed to step 8:
399 can be fit into 3406 8 times, resulting in a remainder of 214.
The number 8 becomes the next digit in our result. 
Result so far: 89978.0
Subtract 3192 from 3406 to get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

Going ahead to step 9:
399 goes into 2140 5 times with a remainder of 145.
The number 5 becomes the next digit in our result. 
Result so far: 89978.5
The remainder is 145 after subtracting 1995 from 2140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

On to step 10:
If we divide 1450 by 399, we get 3 and a remainder of 253.
Put 3 as the next digit of the answer. 
Result so far: 89978.53
If we take 1197 away from 1450, we end up with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Step 11:
399 can be fit into 2530 6 times, resulting in a remainder of 136.
The number 6 becomes the next digit in our result. 
Result so far: 89978.536
Subtracting 2394 from 2530 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 12:
399 can be fit into 1360 3 times, resulting in a remainder of 163.
The next digit of our result is 3. 
Result so far: 89978.5363
If we subtract 1197 from 1360, we get 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 13:
The number 399 fits into 1630 4 times, leaving a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 89978.53634
If we subtract 1596 from 1630, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 14:
When dividing 340 by 399, we get 0 with a remainder of 340.
Use 0 as the next digit of our solution. 
Result so far: 89978.53634
The remainder is 340 after subtracting 0 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 15:
3400 divided by 399 is 8 with a remainder of 208.
The next digit of our result is 8. 
Result so far: 89978.5363408
Deduct 3192 from 3400 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 16:
399 can be fit into 2080 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 89978.53634085
The remainder is 85 after subtracting 1995 from 2080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

In conclusion, the division gives 89978.53634085 with a balance of 8.5e-08.