Let's divide 40898391 by 648
We're looking to find how many times 648 goes into 40898391.

Step 1:
648 goes into 4 0 times with a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 648

Step 2:
If we divide 40 by 648, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Fetch the next digit (8) from the dividend, attach it to 40 and continue: 408 / 648

Going ahead to step 3:
408 divided by 648 is 0 with a remainder of 408.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 408, we end up with 408.
Fetch the next digit (9) from the dividend, attach it to 408 and continue: 4089 / 648

Step 4:
If we divide 4089 by 648, we get 6 and a remainder of 201.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 3888 from 4089 leaves us with 201.
Grab the next digit (8) from the dividend, add it to 201, then carry on: 2018 / 648

Step 5:
If we divide 2018 by 648, we get 3 and a remainder of 74.
Put 3 as the next digit of the answer. 
Result so far: 63.0
If we take 1944 away from 2018, we end up with 74.
Fetch the next digit (3) from the dividend, attach it to 74 and continue: 743 / 648

Moving on to step 6:
The number 648 fits into 743 1 times, leaving a remainder of 95.
Write down 1 as next digit of the result. 
Result so far: 631.0
Deduct 648 from 743 and we're left with 95.
Grab the next digit (9) from the dividend, add it to 95, then carry on: 959 / 648

Moving on to step 7:
The number 648 fits into 959 1 times, leaving a remainder of 311.
Put 1 as the next digit of the answer. 
Result so far: 6311.0
If we take 648 away from 959, we end up with 311.
Append the next digit (1) from the dividend to 311 and continue with: 3111 / 648

On to step 8:
The number 648 fits into 3111 4 times, leaving a remainder of 519.
Write down 4 as next digit of the result. 
Result so far: 63114.0
Deduct 2592 from 3111 and we're left with 519.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

Step 9:
648 goes into 5190 8 times with a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 63114.8
Subtract 5184 from 5190 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
60 divided by 648 is 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 63114.8
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 11:
600 divided by 648 is 0 with a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 63114.8
The remainder is 600 after subtracting 0 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

In conclusion, the division gives 63114.8 with a balance of 0.06.