We're dividing 19798746 by 774 
We want to figure out the number of times 19798746 can be divided by 774.

On to step 1:
If we divide 1 by 774, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 774

Advancing to step 2:
When dividing 19 by 774, we get 0 with a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Include the next digit (7) from the dividend after 19, then repeat: 197 / 774

Going ahead to step 3:
The number 774 fits into 197 0 times, leaving a remainder of 197.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 197 after subtracting 0 from 197.
Append the next digit (9) from the dividend to 197 and continue with: 1979 / 774

Moving on to step 4:
774 can be fit into 1979 2 times, resulting in a remainder of 431.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1548 from 1979 and we're left with 431.
Grab the next digit (8) from the dividend, add it to 431, then carry on: 4318 / 774

Going ahead to step 5:
The number 774 fits into 4318 5 times, leaving a remainder of 448.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Subtracting 3870 from 4318 leaves us with 448.
Bring next digit (7) of the dividend behind the 448 and repeat the process: 4487 / 774

Step 6:
If we divide 4487 by 774, we get 5 and a remainder of 617.
Record the quotient 5 as the next digit in the result. 
Result so far: 255.0
Deduct 3870 from 4487 and we're left with 617.
Append the next digit (4) from the dividend to 617 and continue with: 6174 / 774

Step 7:
774 can be fit into 6174 7 times, resulting in a remainder of 756.
Record the quotient 7 as the next digit in the result. 
Result so far: 2557.0
If we subtract 5418 from 6174, we get 756.
Bring next digit (6) of the dividend behind the 756 and repeat the process: 7566 / 774

On to step 8:
774 goes into 7566 9 times with a remainder of 600.
The number 9 becomes the next digit in our result. 
Result so far: 25579.0
The remainder is 600 after subtracting 6966 from 7566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 9:
774 can be fit into 6000 7 times, resulting in a remainder of 582.
The next digit of our result is 7. 
Result so far: 25579.7
If we subtract 5418 from 6000, we get 582.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5820, and continue the process.

On to step 10:
774 goes into 5820 7 times with a remainder of 402.
Write down 7 as next digit of the result. 
Result so far: 25579.77
The remainder is 402 after subtracting 5418 from 5820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4020, and continue the process.

The final result is 25579.77 with a remainder of 0.402.