We look at the division of 715148 by 210 
Let's see how many times 210 fits into 715148.

Step 1:
The number 210 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 210

Going ahead to step 2:
210 goes into 71 0 times with a remainder of 71.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 71, we end up with 71.
Bring next digit (5) of the dividend behind the 71 and repeat the process: 715 / 210

On to step 3:
210 can be fit into 715 3 times, resulting in a remainder of 85.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 630 from 715 to get 85.
Include the next digit (1) from the dividend after 85, then repeat: 851 / 210

On to step 4:
851 divided by 210 is 4 with a remainder of 11.
The next digit of our result is 4. 
Result so far: 34.0
The remainder is 11 after subtracting 840 from 851.
Fetch the next digit (4) from the dividend, attach it to 11 and continue: 114 / 210

Advancing to step 5:
114 divided by 210 is 0 with a remainder of 114.
Write down 0 as next digit of the result. 
Result so far: 340.0
Subtracting 0 from 114 leaves us with 114.
Grab the next digit (8) from the dividend, add it to 114, then carry on: 1148 / 210

Step 6:
210 goes into 1148 5 times with a remainder of 98.
Record the quotient 5 as the next digit in the result. 
Result so far: 3405.0
If we subtract 1050 from 1148, we get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

On to step 7:
The number 210 fits into 980 4 times, leaving a remainder of 140.
Put 4 as the next digit of the answer. 
Result so far: 3405.4
The remainder is 140 after subtracting 840 from 980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Step 8:
1400 divided by 210 is 6 with a remainder of 140.
Record the quotient 6 as the next digit in the result. 
Result so far: 3405.46
If we subtract 1260 from 1400, we get 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 9:
210 can be fit into 1400 6 times, resulting in a remainder of 140.
The next digit of our result is 6. 
Result so far: 3405.466
Subtracting 1260 from 1400 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

After the division, we end up with 3405.466 and a remainder of 0.014.