We're dividing 570121 by 3 
Let's see how many times 3 fits into 570121.

Step 1:
3 can be fit into 5 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 5, we end up with 2.
Include the next digit (7) from the dividend after 2, then repeat: 27 / 3

Advancing to step 2:
3 goes into 27 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 27 from 27 to get 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 3

Moving on to step 3:
3 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 190.0
Deduct 0 from 0 and we're left with 0.
Grab the next digit (1) from the dividend, add it to 0, then carry on: 1 / 3

Going ahead to step 4:
If we divide 1 by 3, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 1900.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 3

Going ahead to step 5:
If we divide 12 by 3, we get 4 and a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 19004.0
Subtract 12 from 12 to get 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 3

Let's proceed to step 6:
The number 3 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 190040.0
If we take 0 away from 1, we end up with 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 7:
3 goes into 10 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 190040.3
Subtract 9 from 10 to 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.

Advancing to step 8:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 190040.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 190040.33 with a balance of 0.001.