We divide 90342742 by 509
Let's see how many times 509 fits into 90342742.

On to step 1:
9 divided by 509 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 509

Advancing to step 2:
If we divide 90 by 509, we get 0 and a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 90 and we're left with 90.
Grab the next digit (3) from the dividend, add it to 90, then carry on: 903 / 509

Moving on to step 3:
The number 509 fits into 903 1 times, leaving a remainder of 394.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 509 from 903, we get 394.
Append the next digit (4) from the dividend to 394 and continue with: 3944 / 509

Going ahead to step 4:
When dividing 3944 by 509, we get 7 with a remainder of 381.
The next digit of our result is 7. 
Result so far: 17.0
The remainder is 381 after subtracting 3563 from 3944.
Append the next digit (2) from the dividend to 381 and continue with: 3812 / 509

Advancing to step 5:
3812 divided by 509 is 7 with a remainder of 249.
Record the quotient 7 as the next digit in the result. 
Result so far: 177.0
If we subtract 3563 from 3812, we get 249.
Include the next digit (7) from the dividend after 249, then repeat: 2497 / 509

Advancing to step 6:
The number 509 fits into 2497 4 times, leaving a remainder of 461.
Record the quotient 4 as the next digit in the result. 
Result so far: 1774.0
The remainder is 461 after subtracting 2036 from 2497.
Take the next digit (4) from the dividend and append it to 461, then repeat: 4614 / 509

On to step 7:
If we divide 4614 by 509, we get 9 and a remainder of 33.
The number 9 becomes the next digit in our result. 
Result so far: 17749.0
Subtracting 4581 from 4614 leaves us with 33.
Grab the next digit (2) from the dividend, add it to 33, then carry on: 332 / 509

Let's proceed to step 8:
When dividing 332 by 509, we get 0 with a remainder of 332.
The number 0 becomes the next digit in our result. 
Result so far: 177490.0
If we take 0 away from 332, we end up with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Moving on to step 9:
The number 509 fits into 3320 6 times, leaving a remainder of 266.
The next digit of our result is 6. 
Result so far: 177490.6
Deduct 3054 from 3320 and we're left with 266.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2660, and continue the process.

Step 10:
509 can be fit into 2660 5 times, resulting in a remainder of 115.
Use 5 as the next digit of our solution. 
Result so far: 177490.65
If we subtract 2545 from 2660, we get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

Step 11:
The number 509 fits into 1150 2 times, leaving a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 177490.652
Subtracting 1018 from 1150 leaves us with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 12:
The number 509 fits into 1320 2 times, leaving a remainder of 302.
Put 2 as the next digit of the answer. 
Result so far: 177490.6522
Subtracting 1018 from 1320 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

The final result is 177490.6522 with a remainder of 0.00302.