280939 ÷ 57 
We want to figure out the number of times 280939 can be divided by 57.

On to step 1:
When dividing 2 by 57, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 57

Let's proceed to step 2:
The number 57 fits into 28 0 times, leaving a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Take the next digit (0) from the dividend and append it to 28, then repeat: 280 / 57

Let's proceed to step 3:
The number 57 fits into 280 4 times, leaving a remainder of 52.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 228 from 280 leaves us with 52.
Include the next digit (9) from the dividend after 52, then repeat: 529 / 57

Let's proceed to step 4:
When dividing 529 by 57, we get 9 with a remainder of 16.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Deduct 513 from 529 and we're left with 16.
Append the next digit (3) from the dividend to 16 and continue with: 163 / 57

Step 5:
The number 57 fits into 163 2 times, leaving a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 492.0
If we subtract 114 from 163, we get 49.
Include the next digit (9) from the dividend after 49, then repeat: 499 / 57

On to step 6:
57 can be fit into 499 8 times, resulting in a remainder of 43.
Write down 8 as next digit of the result. 
Result so far: 4928.0
Subtracting 456 from 499 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Step 7:
When dividing 430 by 57, we get 7 with a remainder of 31.
Use 7 as the next digit of our solution. 
Result so far: 4928.7
If we take 399 away from 430, we end up 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.

On to step 8:
If we divide 310 by 57, we get 5 and a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 4928.75
The remainder is 25 after subtracting 285 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
When dividing 250 by 57, we get 4 with a remainder of 22.
Record the quotient 4 as the next digit in the result. 
Result so far: 4928.754
If we take 228 away from 250, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Let's proceed to step 10:
57 can be fit into 220 3 times, resulting in a remainder of 49.
Write down 3 as next digit of the result. 
Result so far: 4928.7543
Deduct 171 from 220 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 11:
The number 57 fits into 490 8 times, leaving a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 4928.75438
Deduct 456 from 490 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 12:
If we divide 340 by 57, we get 5 and a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 4928.754385
The remainder is 55 after subtracting 285 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 13:
The number 57 fits into 550 9 times, leaving a remainder of 37.
The next digit of our result is 9. 
Result so far: 4928.7543859
If we subtract 513 from 550, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 14:
If we divide 370 by 57, we get 6 and a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 4928.75438596
Subtracting 342 from 370 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Our division results in 4928.75438596 with a remaining 2.8e-08.