339553 ÷ 57 
Our goal is to divide 339553 by 57.

Step 1:
3 divided by 57 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 57

Going ahead to step 2:
57 can be fit into 33 0 times, resulting in a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 33 and we're left with 33.
Include the next digit (9) from the dividend after 33, then repeat: 339 / 57

Step 3:
57 can be fit into 339 5 times, resulting in a remainder of 54.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Deduct 285 from 339 and we're left with 54.
Grab the next digit (5) from the dividend, add it to 54, then carry on: 545 / 57

Going ahead to step 4:
57 goes into 545 9 times with a remainder of 32.
Write down 9 as next digit of the result. 
Result so far: 59.0
Subtracting 513 from 545 leaves us with 32.
Append the next digit (5) from the dividend to 32 and continue with: 325 / 57

Let's proceed to step 5:
If we divide 325 by 57, we get 5 and a remainder of 40.
Record the quotient 5 as the next digit in the result. 
Result so far: 595.0
The remainder is 40 after subtracting 285 from 325.
Append the next digit (3) from the dividend to 40 and continue with: 403 / 57

Step 6:
The number 57 fits into 403 7 times, leaving a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 5957.0
If we take 399 away from 403, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 7:
57 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 5957.0
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 8:
57 goes into 400 7 times with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 5957.07
If we subtract 399 from 400, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 9:
57 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 5957.07
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
The number 57 fits into 100 1 times, leaving a remainder of 43.
The next digit of our result is 1. 
Result so far: 5957.0701
Deduct 57 from 100 and we're left 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.

Going ahead to step 11:
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: 5957.07017
If we subtract 399 from 430, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 12:
57 goes into 310 5 times with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 5957.070175
Deduct 285 from 310 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 13:
If we divide 250 by 57, we get 4 and a remainder of 22.
Use 4 as the next digit of our solution. 
Result so far: 5957.0701754
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.

Going ahead to step 14:
220 divided by 57 is 3 with a remainder of 49.
Put 3 as the next digit of the answer. 
Result so far: 5957.07017543
The remainder is 49 after subtracting 171 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

The final outcome is 5957.07017543, with a leftover of 4.9e-08.