64561390 divided by 615 
Our goal is to divide 64561390 by 615.

Going ahead to step 1:
615 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 615

On to step 2:
The number 615 fits into 64 0 times, leaving a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Include the next digit (5) from the dividend after 64, then repeat: 645 / 615

Step 3:
When dividing 645 by 615, we get 1 with a remainder of 30.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 615 away from 645, we end up with 30.
Grab the next digit (6) from the dividend, add it to 30, then carry on: 306 / 615

On to step 4:
If we divide 306 by 615, we get 0 and a remainder of 306.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Subtract 0 from 306 to get 306.
Take the next digit (1) from the dividend and append it to 306, then repeat: 3061 / 615

On to step 5:
When dividing 3061 by 615, we get 4 with a remainder of 601.
Write down 4 as next digit of the result. 
Result so far: 104.0
Subtract 2460 from 3061 to get 601.
Fetch the next digit (3) from the dividend, attach it to 601 and continue: 6013 / 615

Let's proceed to step 6:
The number 615 fits into 6013 9 times, leaving a remainder of 478.
The number 9 becomes the next digit in our result. 
Result so far: 1049.0
If we subtract 5535 from 6013, we get 478.
Include the next digit (9) from the dividend after 478, then repeat: 4789 / 615

Let's proceed to step 7:
If we divide 4789 by 615, we get 7 and a remainder of 484.
Record the quotient 7 as the next digit in the result. 
Result so far: 10497.0
Subtract 4305 from 4789 to get 484.
Take the next digit (0) from the dividend and append it to 484, then repeat: 4840 / 615

Going ahead to step 8:
615 can be fit into 4840 7 times, resulting in a remainder of 535.
Record the quotient 7 as the next digit in the result. 
Result so far: 104977.0
If we take 4305 away from 4840, we end up with 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Moving on to step 9:
The number 615 fits into 5350 8 times, leaving a remainder of 430.
Write down 8 as next digit of the result. 
Result so far: 104977.8
If we subtract 4920 from 5350, we get 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 10:
If we divide 4300 by 615, we get 6 and a remainder of 610.
Write down 6 as next digit of the result. 
Result so far: 104977.86
Subtract 3690 from 4300 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Let's proceed to step 11:
615 goes into 6100 9 times with a remainder of 565.
Use 9 as the next digit of our solution. 
Result so far: 104977.869
If we take 5535 away from 6100, we end up with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Step 12:
5650 divided by 615 is 9 with a remainder of 115.
Use 9 as the next digit of our solution. 
Result so far: 104977.8699
Subtract 5535 from 5650 to get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

In conclusion, the division gives 104977.8699 with a balance of 0.00115.