90585570 divided by 664 
Our goal is to divide 90585570 by 664.

Moving on to step 1:
When dividing 9 by 664, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 664

Going ahead to step 2:
When dividing 90 by 664, we get 0 with a remainder of 90.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Include the next digit (5) from the dividend after 90, then repeat: 905 / 664

Moving on to step 3:
The number 664 fits into 905 1 times, leaving a remainder of 241.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 664 from 905, we get 241.
Include the next digit (8) from the dividend after 241, then repeat: 2418 / 664

Step 4:
The number 664 fits into 2418 3 times, leaving a remainder of 426.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 426 after subtracting 1992 from 2418.
Bring next digit (5) of the dividend behind the 426 and repeat the process: 4265 / 664

Step 5:
664 goes into 4265 6 times with a remainder of 281.
Put 6 as the next digit of the answer. 
Result so far: 136.0
The remainder is 281 after subtracting 3984 from 4265.
Take the next digit (5) from the dividend and append it to 281, then repeat: 2815 / 664

On to step 6:
2815 divided by 664 is 4 with a remainder of 159.
Record the quotient 4 as the next digit in the result. 
Result so far: 1364.0
The remainder is 159 after subtracting 2656 from 2815.
Include the next digit (7) from the dividend after 159, then repeat: 1597 / 664

Let's proceed to step 7:
1597 divided by 664 is 2 with a remainder of 269.
Use 2 as the next digit of our solution. 
Result so far: 13642.0
Deduct 1328 from 1597 and we're left with 269.
Take the next digit (0) from the dividend and append it to 269, then repeat: 2690 / 664

Going ahead to step 8:
If we divide 2690 by 664, we get 4 and a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 136424.0
Subtracting 2656 from 2690 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 9:
The number 664 fits into 340 0 times, leaving a remainder of 340.
Record the quotient 0 as the next digit in the result. 
Result so far: 136424.0
Subtracting 0 from 340 leaves us with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

On to step 10:
664 goes into 3400 5 times with a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 136424.05
If we take 3320 away from 3400, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
If we divide 800 by 664, we get 1 and a remainder of 136.
The next digit of our result is 1. 
Result so far: 136424.051
Subtracting 664 from 800 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Moving on to step 12:
1360 divided by 664 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 136424.0512
The remainder is 32 after subtracting 1328 from 1360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 13:
If we divide 320 by 664, we get 0 and a remainder of 320.
The next digit of our result is 0. 
Result so far: 136424.0512
Subtract 0 from 320 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 14:
If we divide 3200 by 664, we get 4 and a remainder of 544.
The number 4 becomes the next digit in our result. 
Result so far: 136424.051204
Deduct 2656 from 3200 and we're left with 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Step 15:
5440 divided by 664 is 8 with a remainder of 128.
The next digit of our result is 8. 
Result so far: 136424.0512048
If we subtract 5312 from 5440, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 16:
If we divide 1280 by 664, we get 1 and a remainder of 616.
Record the quotient 1 as the next digit in the result. 
Result so far: 136424.05120481
Subtracting 664 from 1280 leaves us with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

After the division, we end up with 136424.05120481 and a remainder of 6.16e-07.