We look at the division of 537961 by 3 
Let's see how many times 3 fits into 537961.

Advancing to step 1:
3 goes into 5 1 times with a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 3 from 5 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 3

Step 2:
3 can be fit into 23 7 times, resulting in a remainder of 2.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtracting 21 from 23 leaves us with 2.
Fetch the next digit (7) from the dividend, attach it to 2 and continue: 27 / 3

On to step 3:
3 goes into 27 9 times with a remainder of 0.
The next digit of our result is 9. 
Result so far: 179.0
Subtracting 27 from 27 leaves us with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Going ahead to step 4:
The number 3 fits into 9 3 times, leaving a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 1793.0
Subtract 9 from 9 to get 0.
Append the next digit (6) from the dividend to 0 and continue with: 6 / 3

Advancing to step 5:
3 goes into 6 2 times with a remainder of 0.
The next digit of our result is 2. 
Result so far: 17932.0
Deduct 6 from 6 and we're left with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 3

On to step 6:
The number 3 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 179320.0
Subtracting 0 from 1 leaves us 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.

Advancing to step 7:
When dividing 10 by 3, we get 3 with a remainder of 1.
The next digit of our result is 3. 
Result so far: 179320.3
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.

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: 179320.33
If we take 9 away from 10, 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.

After the division, we end up with 179320.33 and a remainder of 0.001.