We look at the division of 31225343 by 210 
We want to divide 31225343 by 210.

Going ahead to step 1:
If we divide 3 by 210, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 210

Moving on to step 2:
210 goes into 31 0 times with a remainder of 31.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Include the next digit (2) from the dividend after 31, then repeat: 312 / 210

Going ahead to step 3:
If we divide 312 by 210, we get 1 and a remainder of 102.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 210 from 312 and we're left with 102.
Take the next digit (2) from the dividend and append it to 102, then repeat: 1022 / 210

Let's proceed to step 4:
1022 divided by 210 is 4 with a remainder of 182.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 840 from 1022 and we're left with 182.
Take the next digit (5) from the dividend and append it to 182, then repeat: 1825 / 210

Going ahead to step 5:
If we divide 1825 by 210, we get 8 and a remainder of 145.
Record the quotient 8 as the next digit in the result. 
Result so far: 148.0
If we take 1680 away from 1825, we end up with 145.
Include the next digit (3) from the dividend after 145, then repeat: 1453 / 210

Going ahead to step 6:
The number 210 fits into 1453 6 times, leaving a remainder of 193.
Put 6 as the next digit of the answer. 
Result so far: 1486.0
If we subtract 1260 from 1453, we get 193.
Take the next digit (4) from the dividend and append it to 193, then repeat: 1934 / 210

Moving on to step 7:
210 can be fit into 1934 9 times, resulting in a remainder of 44.
Write down 9 as next digit of the result. 
Result so far: 14869.0
If we take 1890 away from 1934, we end up with 44.
Include the next digit (3) from the dividend after 44, then repeat: 443 / 210

Let's proceed to step 8:
If we divide 443 by 210, we get 2 and a remainder of 23.
The number 2 becomes the next digit in our result. 
Result so far: 148692.0
The remainder is 23 after subtracting 420 from 443.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 9:
210 can be fit into 230 1 times, resulting in a remainder of 20.
Record the quotient 1 as the next digit in the result. 
Result so far: 148692.1
Subtract 210 from 230 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
If we divide 200 by 210, we get 0 and a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 148692.1
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 11:
210 can be fit into 2000 9 times, resulting in a remainder of 110.
Use 9 as the next digit of our solution. 
Result so far: 148692.109
Subtract 1890 from 2000 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 12:
1100 divided by 210 is 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 148692.1095
The remainder is 50 after subtracting 1050 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
When dividing 500 by 210, we get 2 with a remainder of 80.
Record the quotient 2 as the next digit in the result. 
Result so far: 148692.10952
If we subtract 420 from 500, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 14:
The number 210 fits into 800 3 times, leaving a remainder of 170.
Record the quotient 3 as the next digit in the result. 
Result so far: 148692.109523
Subtract 630 from 800 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Advancing to step 15:
210 goes into 1700 8 times with a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 148692.1095238
If we subtract 1680 from 1700, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 16:
If we divide 200 by 210, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 148692.1095238
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 148692.1095238 with a remainder of 2e-07.