42840335 divided by 210 
We want to figure out the number of times 42840335 can be divided by 210.

Advancing to step 1:
4 divided by 210 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 210

On to step 2:
When dividing 42 by 210, we get 0 with a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Include the next digit (8) from the dividend after 42, then repeat: 428 / 210

Going ahead to step 3:
If we divide 428 by 210, we get 2 and a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 420 from 428 to get 8.
Take the next digit (4) from the dividend and append it to 8, then repeat: 84 / 210

Step 4:
If we divide 84 by 210, we get 0 and a remainder of 84.
Write down 0 as next digit of the result. 
Result so far: 20.0
The remainder is 84 after subtracting 0 from 84.
Take the next digit (0) from the dividend and append it to 84, then repeat: 840 / 210

On to step 5:
The number 210 fits into 840 4 times, leaving a remainder of 0.
The next digit of our result is 4. 
Result so far: 204.0
Subtract 840 from 840 to get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 210

Step 6:
When dividing 3 by 210, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 2040.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 210

On to step 7:
When dividing 33 by 210, we get 0 with a remainder of 33.
Record the quotient 0 as the next digit in the result. 
Result so far: 20400.0
If we take 0 away from 33, we end up with 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 210

Step 8:
If we divide 335 by 210, we get 1 and a remainder of 125.
Use 1 as the next digit of our solution. 
Result so far: 204001.0
Subtract 210 from 335 to get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 9:
If we divide 1250 by 210, we get 5 and a remainder of 200.
Put 5 as the next digit of the answer. 
Result so far: 204001.5
If we take 1050 away from 1250, we end up 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.

Advancing to step 10:
When dividing 2000 by 210, we get 9 with a remainder of 110.
Write down 9 as next digit of the result. 
Result so far: 204001.59
If we subtract 1890 from 2000, we 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.

Advancing to step 11:
1100 divided by 210 is 5 with a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 204001.595
Deduct 1050 from 1100 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 12:
210 goes into 500 2 times with a remainder of 80.
Use 2 as the next digit of our solution. 
Result so far: 204001.5952
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 13:
210 can be fit into 800 3 times, resulting in a remainder of 170.
The number 3 becomes the next digit in our result. 
Result so far: 204001.59523
Subtracting 630 from 800 leaves us with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 14:
210 goes into 1700 8 times with a remainder of 20.
Write down 8 as next digit of the result. 
Result so far: 204001.595238
Subtracting 1680 from 1700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 15:
210 goes into 200 0 times with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 204001.595238
If we take 0 away from 200, we end up 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.

Step 16:
210 can be fit into 2000 9 times, resulting in a remainder of 110.
The number 9 becomes the next digit in our result. 
Result so far: 204001.59523809
The remainder is 110 after subtracting 1890 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

The quotient of the division is 204001.59523809, and the remainder is 1.1e-07.