We look at the division of 18466190 by 509 
We want to figure out the number of times 18466190 can be divided by 509.

On to step 1:
509 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 509

Going ahead to step 2:
509 can be fit into 18 0 times, resulting in a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Include the next digit (4) from the dividend after 18, then repeat: 184 / 509

Let's proceed to step 3:
509 can be fit into 184 0 times, resulting in a remainder of 184.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 184, we end up with 184.
Take the next digit (6) from the dividend and append it to 184, then repeat: 1846 / 509

Let's proceed to step 4:
1846 divided by 509 is 3 with a remainder of 319.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 1527 away from 1846, we end up with 319.
Take the next digit (6) from the dividend and append it to 319, then repeat: 3196 / 509

Going ahead to step 5:
509 can be fit into 3196 6 times, resulting in a remainder of 142.
Use 6 as the next digit of our solution. 
Result so far: 36.0
If we subtract 3054 from 3196, we get 142.
Take the next digit (1) from the dividend and append it to 142, then repeat: 1421 / 509

On to step 6:
The number 509 fits into 1421 2 times, leaving a remainder of 403.
The number 2 becomes the next digit in our result. 
Result so far: 362.0
If we subtract 1018 from 1421, we get 403.
Fetch the next digit (9) from the dividend, attach it to 403 and continue: 4039 / 509

Let's proceed to step 7:
509 goes into 4039 7 times with a remainder of 476.
Write down 7 as next digit of the result. 
Result so far: 3627.0
Subtracting 3563 from 4039 leaves us with 476.
Append the next digit (0) from the dividend to 476 and continue with: 4760 / 509

On to step 8:
When dividing 4760 by 509, we get 9 with a remainder of 179.
The next digit of our result is 9. 
Result so far: 36279.0
The remainder is 179 after subtracting 4581 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Step 9:
1790 divided by 509 is 3 with a remainder of 263.
Put 3 as the next digit of the answer. 
Result so far: 36279.3
Subtracting 1527 from 1790 leaves us with 263.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2630, and continue the process.

On to step 10:
The number 509 fits into 2630 5 times, leaving a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 36279.35
Subtract 2545 from 2630 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 11:
The number 509 fits into 850 1 times, leaving a remainder of 341.
The next digit of our result is 1. 
Result so far: 36279.351
Deduct 509 from 850 and we're left with 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Moving on to step 12:
509 goes into 3410 6 times with a remainder of 356.
The next digit of our result is 6. 
Result so far: 36279.3516
The remainder is 356 after subtracting 3054 from 3410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Advancing to step 13:
3560 divided by 509 is 6 with a remainder of 506.
The next digit of our result is 6. 
Result so far: 36279.35166
Subtract 3054 from 3560 to get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

The quotient of the division is 36279.35166, and the remainder is 0.000506.