We look at the division of 42581418 by 210 
Let's see how many times 210 fits into 42581418.

Going ahead to step 1:
If we divide 4 by 210, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 210

Advancing to step 2:
210 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Include the next digit (5) from the dividend after 42, then repeat: 425 / 210

Let's proceed to step 3:
When dividing 425 by 210, we get 2 with a remainder of 5.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 420 from 425 leaves us with 5.
Append the next digit (8) from the dividend to 5 and continue with: 58 / 210

Step 4:
210 goes into 58 0 times with a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
Deduct 0 from 58 and we're left with 58.
Fetch the next digit (1) from the dividend, attach it to 58 and continue: 581 / 210

Step 5:
When dividing 581 by 210, we get 2 with a remainder of 161.
Write down 2 as next digit of the result. 
Result so far: 202.0
Deduct 420 from 581 and we're left with 161.
Fetch the next digit (4) from the dividend, attach it to 161 and continue: 1614 / 210

Moving on to step 6:
210 goes into 1614 7 times with a remainder of 144.
Record the quotient 7 as the next digit in the result. 
Result so far: 2027.0
Deduct 1470 from 1614 and we're left with 144.
Include the next digit (1) from the dividend after 144, then repeat: 1441 / 210

On to step 7:
210 goes into 1441 6 times with a remainder of 181.
Write down 6 as next digit of the result. 
Result so far: 20276.0
Deduct 1260 from 1441 and we're left with 181.
Include the next digit (8) from the dividend after 181, then repeat: 1818 / 210

On to step 8:
210 can be fit into 1818 8 times, resulting in a remainder of 138.
The next digit of our result is 8. 
Result so far: 202768.0
Subtracting 1680 from 1818 leaves us with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Step 9:
210 goes into 1380 6 times with a remainder of 120.
Put 6 as the next digit of the answer. 
Result so far: 202768.6
If we take 1260 away from 1380, we end up with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 10:
210 goes into 1200 5 times with a remainder of 150.
The next digit of our result is 5. 
Result so far: 202768.65
If we subtract 1050 from 1200, we get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 11:
The number 210 fits into 1500 7 times, leaving a remainder of 30.
Put 7 as the next digit of the answer. 
Result so far: 202768.657
Subtract 1470 from 1500 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
210 goes into 300 1 times with a remainder of 90.
Write down 1 as next digit of the result. 
Result so far: 202768.6571
Deduct 210 from 300 and we're left with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 13:
The number 210 fits into 900 4 times, leaving a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 202768.65714
Deduct 840 from 900 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 14:
When dividing 600 by 210, we get 2 with a remainder of 180.
Write down 2 as next digit of the result. 
Result so far: 202768.657142
If we take 420 away from 600, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 15:
If we divide 1800 by 210, we get 8 and a remainder of 120.
Record the quotient 8 as the next digit in the result. 
Result so far: 202768.6571428
If we subtract 1680 from 1800, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 16:
If we divide 1200 by 210, we get 5 and a remainder of 150.
Put 5 as the next digit of the answer. 
Result so far: 202768.65714285
The remainder is 150 after subtracting 1050 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

After the division, we end up with 202768.65714285 and a remainder of 1.5e-07.