We divide 66817959 by 210
Our goal is to divide 66817959 by 210.

On to step 1:
If we divide 6 by 210, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 210

Let's proceed to step 2:
If we divide 66 by 210, we get 0 and a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Grab the next digit (8) from the dividend, add it to 66, then carry on: 668 / 210

Going ahead to step 3:
210 can be fit into 668 3 times, resulting in a remainder of 38.
The next digit of our result is 3. 
Result so far: 3.0
If we take 630 away from 668, we end up with 38.
Fetch the next digit (1) from the dividend, attach it to 38 and continue: 381 / 210

Going ahead to step 4:
When dividing 381 by 210, we get 1 with a remainder of 171.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Subtracting 210 from 381 leaves us with 171.
Grab the next digit (7) from the dividend, add it to 171, then carry on: 1717 / 210

Let's proceed to step 5:
When dividing 1717 by 210, we get 8 with a remainder of 37.
Use 8 as the next digit of our solution. 
Result so far: 318.0
Subtracting 1680 from 1717 leaves us with 37.
Bring next digit (9) of the dividend behind the 37 and repeat the process: 379 / 210

Step 6:
210 can be fit into 379 1 times, resulting in a remainder of 169.
Use 1 as the next digit of our solution. 
Result so far: 3181.0
Subtract 210 from 379 to get 169.
Include the next digit (5) from the dividend after 169, then repeat: 1695 / 210

Going ahead to step 7:
When dividing 1695 by 210, we get 8 with a remainder of 15.
Use 8 as the next digit of our solution. 
Result so far: 31818.0
If we subtract 1680 from 1695, we get 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 210

On to step 8:
When dividing 159 by 210, we get 0 with a remainder of 159.
Use 0 as the next digit of our solution. 
Result so far: 318180.0
If we take 0 away from 159, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Step 9:
210 goes into 1590 7 times with a remainder of 120.
The next digit of our result is 7. 
Result so far: 318180.7
The remainder is 120 after subtracting 1470 from 1590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 10:
When dividing 1200 by 210, we get 5 with a remainder of 150.
The next digit of our result is 5. 
Result so far: 318180.75
Subtracting 1050 from 1200 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 11:
210 goes into 1500 7 times with a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 318180.757
The remainder is 30 after subtracting 1470 from 1500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 12:
300 divided by 210 is 1 with a remainder of 90.
The next digit of our result is 1. 
Result so far: 318180.7571
If we subtract 210 from 300, we get 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:
If we divide 900 by 210, we get 4 and a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 318180.75714
Subtracting 840 from 900 leaves us 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.

Moving on to step 14:
The number 210 fits into 600 2 times, leaving a remainder of 180.
The next digit of our result is 2. 
Result so far: 318180.757142
If we subtract 420 from 600, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 15:
The number 210 fits into 1800 8 times, leaving a remainder of 120.
Record the quotient 8 as the next digit in the result. 
Result so far: 318180.7571428
If we take 1680 away from 1800, 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.

Let's proceed to step 16:
When dividing 1200 by 210, we get 5 with a remainder of 150.
Record the quotient 5 as the next digit in the result. 
Result so far: 318180.75714285
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.

The final outcome is 318180.75714285, with a leftover of 1.5e-07.