We're dividing 212146 by 39 
We want to figure out the number of times 212146 can be divided by 39.

Step 1:
2 divided by 39 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 39

Step 2:
When dividing 21 by 39, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 39

On to step 3:
39 can be fit into 212 5 times, resulting in a remainder of 17.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 195 from 212 leaves us with 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 39

Going ahead to step 4:
When dividing 171 by 39, we get 4 with a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 54.0
The remainder is 15 after subtracting 156 from 171.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 39

On to step 5:
When dividing 154 by 39, we get 3 with a remainder of 37.
Use 3 as the next digit of our solution. 
Result so far: 543.0
If we take 117 away from 154, we end up with 37.
Fetch the next digit (6) from the dividend, attach it to 37 and continue: 376 / 39

Advancing to step 6:
If we divide 376 by 39, we get 9 and a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 5439.0
Subtracting 351 from 376 leaves us 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.

Let's proceed to step 7:
250 divided by 39 is 6 with a remainder of 16.
The next digit of our result is 6. 
Result so far: 5439.6
Subtracting 234 from 250 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
39 can be fit into 160 4 times, resulting in a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 5439.64
Subtracting 156 from 160 leaves us 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.

On to step 9:
39 goes into 40 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 5439.641
The remainder is 1 after subtracting 39 from 40.
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 10:
If we divide 10 by 39, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 5439.641
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 11:
100 divided by 39 is 2 with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 5439.64102
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 12:
220 divided by 39 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 5439.641025
Subtract 195 from 220 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 13:
The number 39 fits into 250 6 times, leaving a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 5439.6410256
Subtracting 234 from 250 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 14:
The number 39 fits into 160 4 times, leaving a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 5439.64102564
If we subtract 156 from 160, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 5439.64102564, with a leftover of 4e-09.