We look at the division of 3583478 by 399 
We're looking to find how many times 399 goes into 3583478.

Moving on to step 1:
3 divided by 399 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 399

Advancing to step 2:
When dividing 35 by 399, we get 0 with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Bring next digit (8) of the dividend behind the 35 and repeat the process: 358 / 399

Let's proceed to step 3:
When dividing 358 by 399, we get 0 with a remainder of 358.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 358 after subtracting 0 from 358.
Append the next digit (3) from the dividend to 358 and continue with: 3583 / 399

Going ahead to step 4:
3583 divided by 399 is 8 with a remainder of 391.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 3192 from 3583 to get 391.
Fetch the next digit (4) from the dividend, attach it to 391 and continue: 3914 / 399

Advancing to step 5:
The number 399 fits into 3914 9 times, leaving a remainder of 323.
Use 9 as the next digit of our solution. 
Result so far: 89.0
Subtract 3591 from 3914 to get 323.
Bring next digit (7) of the dividend behind the 323 and repeat the process: 3237 / 399

Going ahead to step 6:
3237 divided by 399 is 8 with a remainder of 45.
Write down 8 as next digit of the result. 
Result so far: 898.0
The remainder is 45 after subtracting 3192 from 3237.
Fetch the next digit (8) from the dividend, attach it to 45 and continue: 458 / 399

On to step 7:
458 divided by 399 is 1 with a remainder of 59.
The next digit of our result is 1. 
Result so far: 8981.0
If we take 399 away from 458, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 8:
When dividing 590 by 399, we get 1 with a remainder of 191.
The next digit of our result is 1. 
Result so far: 8981.1
Deduct 399 from 590 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Moving on to step 9:
When dividing 1910 by 399, we get 4 with a remainder of 314.
Put 4 as the next digit of the answer. 
Result so far: 8981.14
Subtract 1596 from 1910 to get 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Going ahead to step 10:
3140 divided by 399 is 7 with a remainder of 347.
The number 7 becomes the next digit in our result. 
Result so far: 8981.147
Subtract 2793 from 3140 to get 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Moving on to step 11:
If we divide 3470 by 399, we get 8 and a remainder of 278.
Use 8 as the next digit of our solution. 
Result so far: 8981.1478
The remainder is 278 after subtracting 3192 from 3470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

On to step 12:
If we divide 2780 by 399, we get 6 and a remainder of 386.
Put 6 as the next digit of the answer. 
Result so far: 8981.14786
Subtracting 2394 from 2780 leaves us with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Going ahead to step 13:
3860 divided by 399 is 9 with a remainder of 269.
The next digit of our result is 9. 
Result so far: 8981.147869
Subtracting 3591 from 3860 leaves us with 269.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2690, and continue the process.

Moving on to step 14:
399 goes into 2690 6 times with a remainder of 296.
Record the quotient 6 as the next digit in the result. 
Result so far: 8981.1478696
If we subtract 2394 from 2690, we get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Going ahead to step 15:
2960 divided by 399 is 7 with a remainder of 167.
Record the quotient 7 as the next digit in the result. 
Result so far: 8981.14786967
The remainder is 167 after subtracting 2793 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

After the division, we end up with 8981.14786967 and a remainder of 1.67e-07.