We're dividing 40886930 by 210 
Our goal is to divide 40886930 by 210.

On to step 1:
4 divided by 210 is 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 210

Let's proceed to step 2:
40 divided by 210 is 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 40 and we're left with 40.
Bring next digit (8) of the dividend behind the 40 and repeat the process: 408 / 210

Going ahead to step 3:
If we divide 408 by 210, we get 1 and a remainder of 198.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 210 from 408, we get 198.
Take the next digit (8) from the dividend and append it to 198, then repeat: 1988 / 210

Moving on to step 4:
1988 divided by 210 is 9 with a remainder of 98.
Use 9 as the next digit of our solution. 
Result so far: 19.0
If we subtract 1890 from 1988, we get 98.
Bring next digit (6) of the dividend behind the 98 and repeat the process: 986 / 210

On to step 5:
210 goes into 986 4 times with a remainder of 146.
Record the quotient 4 as the next digit in the result. 
Result so far: 194.0
Deduct 840 from 986 and we're left with 146.
Bring next digit (9) of the dividend behind the 146 and repeat the process: 1469 / 210

Going ahead to step 6:
When dividing 1469 by 210, we get 6 with a remainder of 209.
Write down 6 as next digit of the result. 
Result so far: 1946.0
Subtract 1260 from 1469 to get 209.
Take the next digit (3) from the dividend and append it to 209, then repeat: 2093 / 210

Advancing to step 7:
The number 210 fits into 2093 9 times, leaving a remainder of 203.
Record the quotient 9 as the next digit in the result. 
Result so far: 19469.0
The remainder is 203 after subtracting 1890 from 2093.
Append the next digit (0) from the dividend to 203 and continue with: 2030 / 210

Moving on to step 8:
210 can be fit into 2030 9 times, resulting in a remainder of 140.
Put 9 as the next digit of the answer. 
Result so far: 194699.0
Deduct 1890 from 2030 and we're left 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.

Moving on to step 9:
If we divide 1400 by 210, we get 6 and a remainder of 140.
The number 6 becomes the next digit in our result. 
Result so far: 194699.6
Deduct 1260 from 1400 and we're left 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.

On to step 10:
If we divide 1400 by 210, we get 6 and a remainder of 140.
Put 6 as the next digit of the answer. 
Result so far: 194699.66
Deduct 1260 from 1400 and we're left 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.

The final result is 194699.66 with a remainder of 0.14.