78257224 divided by 645 
We want to divide 78257224 by 645.

Let's proceed to step 1:
7 divided by 645 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 645

Let's proceed to step 2:
The number 645 fits into 78 0 times, leaving a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Fetch the next digit (2) from the dividend, attach it to 78 and continue: 782 / 645

Moving on to step 3:
645 goes into 782 1 times with a remainder of 137.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 645 from 782 leaves us with 137.
Take the next digit (5) from the dividend and append it to 137, then repeat: 1375 / 645

Moving on to step 4:
1375 divided by 645 is 2 with a remainder of 85.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 1290 from 1375 and we're left with 85.
Grab the next digit (7) from the dividend, add it to 85, then carry on: 857 / 645

Step 5:
If we divide 857 by 645, we get 1 and a remainder of 212.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Deduct 645 from 857 and we're left with 212.
Include the next digit (2) from the dividend after 212, then repeat: 2122 / 645

Let's proceed to step 6:
645 can be fit into 2122 3 times, resulting in a remainder of 187.
The number 3 becomes the next digit in our result. 
Result so far: 1213.0
If we take 1935 away from 2122, we end up with 187.
Take the next digit (2) from the dividend and append it to 187, then repeat: 1872 / 645

Let's proceed to step 7:
If we divide 1872 by 645, we get 2 and a remainder of 582.
Use 2 as the next digit of our solution. 
Result so far: 12132.0
Deduct 1290 from 1872 and we're left with 582.
Fetch the next digit (4) from the dividend, attach it to 582 and continue: 5824 / 645

Going ahead to step 8:
645 can be fit into 5824 9 times, resulting in a remainder of 19.
The next digit of our result is 9. 
Result so far: 121329.0
The remainder is 19 after subtracting 5805 from 5824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 9:
When dividing 190 by 645, we get 0 with a remainder of 190.
The number 0 becomes the next digit in our result. 
Result so far: 121329.0
Subtract 0 from 190 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
645 goes into 1900 2 times with a remainder of 610.
Put 2 as the next digit of the answer. 
Result so far: 121329.02
Subtract 1290 from 1900 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.

Going ahead to step 11:
6100 divided by 645 is 9 with a remainder of 295.
Put 9 as the next digit of the answer. 
Result so far: 121329.029
Deduct 5805 from 6100 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Let's proceed to step 12:
The number 645 fits into 2950 4 times, leaving a remainder of 370.
Put 4 as the next digit of the answer. 
Result so far: 121329.0294
If we subtract 2580 from 2950, we get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Step 13:
645 can be fit into 3700 5 times, resulting in a remainder of 475.
Use 5 as the next digit of our solution. 
Result so far: 121329.02945
The remainder is 475 after subtracting 3225 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Let's proceed to step 14:
When dividing 4750 by 645, we get 7 with a remainder of 235.
Use 7 as the next digit of our solution. 
Result so far: 121329.029457
Deduct 4515 from 4750 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 15:
If we divide 2350 by 645, we get 3 and a remainder of 415.
Use 3 as the next digit of our solution. 
Result so far: 121329.0294573
Deduct 1935 from 2350 and we're left with 415.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Step 16:
4150 divided by 645 is 6 with a remainder of 280.
Record the quotient 6 as the next digit in the result. 
Result so far: 121329.02945736
If we take 3870 away from 4150, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

The quotient of the division is 121329.02945736, and the remainder is 2.8e-07.