We're dividing 212185 by 3 
Let's see how many times 3 fits into 212185.

On to step 1:
3 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 3

On to step 2:
The number 3 fits into 21 7 times, leaving a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 0 after subtracting 21 from 21.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 3

Step 3:
If we divide 2 by 3, we get 0 and a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 70.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 3

Advancing to step 4:
3 goes into 21 7 times with a remainder of 0.
The next digit of our result is 7. 
Result so far: 707.0
If we take 21 away from 21, we end up with 0.
Take the next digit (8) from the dividend and append it to 0, then repeat: 8 / 3

Advancing to step 5:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 7072.0
If we take 6 away from 8, we end up with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

Going ahead to step 6:
3 goes into 25 8 times with a remainder of 1.
Record the quotient 8 as the next digit in the result. 
Result so far: 70728.0
The remainder is 1 after subtracting 24 from 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
10 divided by 3 is 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 70728.3
If we subtract 9 from 10, 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.

Moving on to step 8:
3 can be fit into 10 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 70728.33
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.

Our division results in 70728.33 with a remaining 0.001.