90640519 ÷ 634 
Our goal is to divide 90640519 by 634.

Step 1:
If we divide 9 by 634, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 634

Moving on to step 2:
634 can be fit into 90 0 times, resulting in a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Include the next digit (6) from the dividend after 90, then repeat: 906 / 634

Let's proceed to step 3:
634 goes into 906 1 times with a remainder of 272.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 634 from 906 leaves us with 272.
Grab the next digit (4) from the dividend, add it to 272, then carry on: 2724 / 634

Let's proceed to step 4:
If we divide 2724 by 634, we get 4 and a remainder of 188.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Deduct 2536 from 2724 and we're left with 188.
Grab the next digit (0) from the dividend, add it to 188, then carry on: 1880 / 634

Going ahead to step 5:
When dividing 1880 by 634, we get 2 with a remainder of 612.
The number 2 becomes the next digit in our result. 
Result so far: 142.0
Deduct 1268 from 1880 and we're left with 612.
Include the next digit (5) from the dividend after 612, then repeat: 6125 / 634

Step 6:
When dividing 6125 by 634, we get 9 with a remainder of 419.
Put 9 as the next digit of the answer. 
Result so far: 1429.0
Deduct 5706 from 6125 and we're left with 419.
Append the next digit (1) from the dividend to 419 and continue with: 4191 / 634

Going ahead to step 7:
634 goes into 4191 6 times with a remainder of 387.
Record the quotient 6 as the next digit in the result. 
Result so far: 14296.0
Deduct 3804 from 4191 and we're left with 387.
Bring next digit (9) of the dividend behind the 387 and repeat the process: 3879 / 634

Step 8:
3879 divided by 634 is 6 with a remainder of 75.
Record the quotient 6 as the next digit in the result. 
Result so far: 142966.0
Deduct 3804 from 3879 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 9:
If we divide 750 by 634, we get 1 and a remainder of 116.
Record the quotient 1 as the next digit in the result. 
Result so far: 142966.1
The remainder is 116 after subtracting 634 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Going ahead to step 10:
634 goes into 1160 1 times with a remainder of 526.
Use 1 as the next digit of our solution. 
Result so far: 142966.11
Subtract 634 from 1160 to get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

The final result is 142966.11 with a remainder of 0.526.