78585661 divided by 609 
We want to divide 78585661 by 609.

Let's proceed to step 1:
If we divide 7 by 609, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 609

Step 2:
The number 609 fits into 78 0 times, leaving a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Bring next digit (5) of the dividend behind the 78 and repeat the process: 785 / 609

Step 3:
785 divided by 609 is 1 with a remainder of 176.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 609 from 785, we get 176.
Fetch the next digit (8) from the dividend, attach it to 176 and continue: 1768 / 609

Moving on to step 4:
The number 609 fits into 1768 2 times, leaving a remainder of 550.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Deduct 1218 from 1768 and we're left with 550.
Take the next digit (5) from the dividend and append it to 550, then repeat: 5505 / 609

Moving on to step 5:
609 goes into 5505 9 times with a remainder of 24.
Put 9 as the next digit of the answer. 
Result so far: 129.0
Subtract 5481 from 5505 to get 24.
Take the next digit (6) from the dividend and append it to 24, then repeat: 246 / 609

Step 6:
The number 609 fits into 246 0 times, leaving a remainder of 246.
Put 0 as the next digit of the answer. 
Result so far: 1290.0
Subtract 0 from 246 to get 246.
Grab the next digit (6) from the dividend, add it to 246, then carry on: 2466 / 609

Going ahead to step 7:
If we divide 2466 by 609, we get 4 and a remainder of 30.
The number 4 becomes the next digit in our result. 
Result so far: 12904.0
If we subtract 2436 from 2466, we get 30.
Grab the next digit (1) from the dividend, add it to 30, then carry on: 301 / 609

On to step 8:
609 can be fit into 301 0 times, resulting in a remainder of 301.
Put 0 as the next digit of the answer. 
Result so far: 129040.0
Subtracting 0 from 301 leaves us with 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Advancing to step 9:
The number 609 fits into 3010 4 times, leaving a remainder of 574.
Write down 4 as next digit of the result. 
Result so far: 129040.4
If we take 2436 away from 3010, we end up with 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Let's proceed to step 10:
The number 609 fits into 5740 9 times, leaving a remainder of 259.
The next digit of our result is 9. 
Result so far: 129040.49
Subtracting 5481 from 5740 leaves us with 259.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2590, and continue the process.

Step 11:
609 goes into 2590 4 times with a remainder of 154.
Write down 4 as next digit of the result. 
Result so far: 129040.494
Subtract 2436 from 2590 to get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Going ahead to step 12:
The number 609 fits into 1540 2 times, leaving a remainder of 322.
Use 2 as the next digit of our solution. 
Result so far: 129040.4942
If we take 1218 away from 1540, we end up with 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Advancing to step 13:
When dividing 3220 by 609, we get 5 with a remainder of 175.
The next digit of our result is 5. 
Result so far: 129040.49425
If we subtract 3045 from 3220, we get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 14:
1750 divided by 609 is 2 with a remainder of 532.
The next digit of our result is 2. 
Result so far: 129040.494252
Subtracting 1218 from 1750 leaves us with 532.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5320, and continue the process.

On to step 15:
609 goes into 5320 8 times with a remainder of 448.
The next digit of our result is 8. 
Result so far: 129040.4942528
Subtract 4872 from 5320 to get 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Going ahead to step 16:
When dividing 4480 by 609, we get 7 with a remainder of 217.
Write down 7 as next digit of the result. 
Result so far: 129040.49425287
The remainder is 217 after subtracting 4263 from 4480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

The final outcome is 129040.49425287, with a leftover of 2.17e-07.