We look at the division of 390944 by 87 
We want to figure out the number of times 390944 can be divided by 87.

Going ahead to step 1:
The number 87 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 87

Going ahead to step 2:
The number 87 fits into 39 0 times, leaving a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 87

Step 3:
390 divided by 87 is 4 with a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 348 from 390, we get 42.
Include the next digit (9) from the dividend after 42, then repeat: 429 / 87

Going ahead to step 4:
If we divide 429 by 87, we get 4 and a remainder of 81.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
Subtracting 348 from 429 leaves us with 81.
Grab the next digit (4) from the dividend, add it to 81, then carry on: 814 / 87

On to step 5:
If we divide 814 by 87, we get 9 and a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 449.0
If we take 783 away from 814, we end up with 31.
Append the next digit (4) from the dividend to 31 and continue with: 314 / 87

Moving on to step 6:
When dividing 314 by 87, we get 3 with a remainder of 53.
The number 3 becomes the next digit in our result. 
Result so far: 4493.0
If we subtract 261 from 314, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 7:
When dividing 530 by 87, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 4493.6
Deduct 522 from 530 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
87 can be fit into 80 0 times, resulting in a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 4493.6
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 9:
800 divided by 87 is 9 with a remainder of 17.
The next digit of our result is 9. 
Result so far: 4493.609
If we take 783 away from 800, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 10:
87 can be fit into 170 1 times, resulting in a remainder of 83.
Record the quotient 1 as the next digit in the result. 
Result so far: 4493.6091
Subtract 87 from 170 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 11:
If we divide 830 by 87, we get 9 and a remainder of 47.
Record the quotient 9 as the next digit in the result. 
Result so far: 4493.60919
If we subtract 783 from 830, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Moving on to step 12:
When dividing 470 by 87, we get 5 with a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 4493.609195
If we subtract 435 from 470, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 13:
350 divided by 87 is 4 with a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 4493.6091954
Subtract 348 from 350 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 14:
87 goes into 20 0 times with a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 4493.6091954
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 4493.6091954, and the remainder is 2e-08.