We're dividing 89771485 by 648 
Let's see how many times 648 fits into 89771485.

Moving on to step 1:
If we divide 8 by 648, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 648

Going ahead to step 2:
The number 648 fits into 89 0 times, leaving a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 89 leaves us with 89.
Take the next digit (7) from the dividend and append it to 89, then repeat: 897 / 648

Let's proceed to step 3:
648 can be fit into 897 1 times, resulting in a remainder of 249.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 648 from 897 to get 249.
Fetch the next digit (7) from the dividend, attach it to 249 and continue: 2497 / 648

Step 4:
2497 divided by 648 is 3 with a remainder of 553.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Subtracting 1944 from 2497 leaves us with 553.
Fetch the next digit (1) from the dividend, attach it to 553 and continue: 5531 / 648

On to step 5:
648 goes into 5531 8 times with a remainder of 347.
Put 8 as the next digit of the answer. 
Result so far: 138.0
Subtracting 5184 from 5531 leaves us with 347.
Append the next digit (4) from the dividend to 347 and continue with: 3474 / 648

Let's proceed to step 6:
The number 648 fits into 3474 5 times, leaving a remainder of 234.
The number 5 becomes the next digit in our result. 
Result so far: 1385.0
Deduct 3240 from 3474 and we're left with 234.
Take the next digit (8) from the dividend and append it to 234, then repeat: 2348 / 648

Advancing to step 7:
When dividing 2348 by 648, we get 3 with a remainder of 404.
Record the quotient 3 as the next digit in the result. 
Result so far: 13853.0
If we take 1944 away from 2348, we end up with 404.
Bring next digit (5) of the dividend behind the 404 and repeat the process: 4045 / 648

Going ahead to step 8:
When dividing 4045 by 648, we get 6 with a remainder of 157.
The next digit of our result is 6. 
Result so far: 138536.0
The remainder is 157 after subtracting 3888 from 4045.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Step 9:
If we divide 1570 by 648, we get 2 and a remainder of 274.
Put 2 as the next digit of the answer. 
Result so far: 138536.2
Subtracting 1296 from 1570 leaves us with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Going ahead to step 10:
If we divide 2740 by 648, we get 4 and a remainder of 148.
Put 4 as the next digit of the answer. 
Result so far: 138536.24
Deduct 2592 from 2740 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Advancing to step 11:
If we divide 1480 by 648, we get 2 and a remainder of 184.
The number 2 becomes the next digit in our result. 
Result so far: 138536.242
If we subtract 1296 from 1480, we get 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Going ahead to step 12:
648 goes into 1840 2 times with a remainder of 544.
Use 2 as the next digit of our solution. 
Result so far: 138536.2422
If we subtract 1296 from 1840, we get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

After the division, we end up with 138536.2422 and a remainder of 0.00544.