90712998 ÷ 509 
Our goal is to divide 90712998 by 509.

Advancing to step 1:
When dividing 9 by 509, we get 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 509

Advancing to step 2:
90 divided by 509 is 0 with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Bring next digit (7) of the dividend behind the 90 and repeat the process: 907 / 509

Advancing to step 3:
The number 509 fits into 907 1 times, leaving a remainder of 398.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 509 from 907 to get 398.
Grab the next digit (1) from the dividend, add it to 398, then carry on: 3981 / 509

Let's proceed to step 4:
509 can be fit into 3981 7 times, resulting in a remainder of 418.
The next digit of our result is 7. 
Result so far: 17.0
If we subtract 3563 from 3981, we get 418.
Bring next digit (2) of the dividend behind the 418 and repeat the process: 4182 / 509

Advancing to step 5:
If we divide 4182 by 509, we get 8 and a remainder of 110.
Use 8 as the next digit of our solution. 
Result so far: 178.0
Subtract 4072 from 4182 to get 110.
Bring next digit (9) of the dividend behind the 110 and repeat the process: 1109 / 509

Moving on to step 6:
When dividing 1109 by 509, we get 2 with a remainder of 91.
Write down 2 as next digit of the result. 
Result so far: 1782.0
Subtracting 1018 from 1109 leaves us with 91.
Bring next digit (9) of the dividend behind the 91 and repeat the process: 919 / 509

Let's proceed to step 7:
509 goes into 919 1 times with a remainder of 410.
Use 1 as the next digit of our solution. 
Result so far: 17821.0
Deduct 509 from 919 and we're left with 410.
Grab the next digit (8) from the dividend, add it to 410, then carry on: 4108 / 509

Going ahead to step 8:
509 can be fit into 4108 8 times, resulting in a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 178218.0
If we take 4072 away from 4108, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 9:
If we divide 360 by 509, we get 0 and a remainder of 360.
The number 0 becomes the next digit in our result. 
Result so far: 178218.0
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 10:
509 can be fit into 3600 7 times, resulting in a remainder of 37.
Use 7 as the next digit of our solution. 
Result so far: 178218.07
If we take 3563 away from 3600, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 11:
370 divided by 509 is 0 with a remainder of 370.
Record the quotient 0 as the next digit in the result. 
Result so far: 178218.07
Deduct 0 from 370 and we're left with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Going ahead to step 12:
The number 509 fits into 3700 7 times, leaving a remainder of 137.
Put 7 as the next digit of the answer. 
Result so far: 178218.0707
If we take 3563 away from 3700, we end up with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

Advancing to step 13:
If we divide 1370 by 509, we get 2 and a remainder of 352.
The number 2 becomes the next digit in our result. 
Result so far: 178218.07072
If we subtract 1018 from 1370, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 14:
If we divide 3520 by 509, we get 6 and a remainder of 466.
The next digit of our result is 6. 
Result so far: 178218.070726
Subtract 3054 from 3520 to get 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Going ahead to step 15:
509 goes into 4660 9 times with a remainder of 79.
Use 9 as the next digit of our solution. 
Result so far: 178218.0707269
The remainder is 79 after subtracting 4581 from 4660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Let's proceed to step 16:
If we divide 790 by 509, we get 1 and a remainder of 281.
Put 1 as the next digit of the answer. 
Result so far: 178218.07072691
The remainder is 281 after subtracting 509 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

In conclusion, the division gives 178218.07072691 with a balance of 2.81e-07.