We look at the division of 1581529 by 774 
Let's see how many times 774 fits into 1581529.

Moving on to step 1:
When dividing 1 by 774, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 774

On to step 2:
The number 774 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Take the next digit (8) from the dividend and append it to 15, then repeat: 158 / 774

Going ahead to step 3:
If we divide 158 by 774, we get 0 and a remainder of 158.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 158 to get 158.
Bring next digit (1) of the dividend behind the 158 and repeat the process: 1581 / 774

Moving on to step 4:
If we divide 1581 by 774, we get 2 and a remainder of 33.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 1548 from 1581 to get 33.
Fetch the next digit (5) from the dividend, attach it to 33 and continue: 335 / 774

On to step 5:
When dividing 335 by 774, we get 0 with a remainder of 335.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Deduct 0 from 335 and we're left with 335.
Grab the next digit (2) from the dividend, add it to 335, then carry on: 3352 / 774

Step 6:
774 can be fit into 3352 4 times, resulting in a remainder of 256.
Record the quotient 4 as the next digit in the result. 
Result so far: 204.0
If we subtract 3096 from 3352, we get 256.
Append the next digit (9) from the dividend to 256 and continue with: 2569 / 774

Moving on to step 7:
If we divide 2569 by 774, we get 3 and a remainder of 247.
Write down 3 as next digit of the result. 
Result so far: 2043.0
If we subtract 2322 from 2569, we get 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Advancing to step 8:
2470 divided by 774 is 3 with a remainder of 148.
Put 3 as the next digit of the answer. 
Result so far: 2043.3
Subtracting 2322 from 2470 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 9:
If we divide 1480 by 774, we get 1 and a remainder of 706.
The next digit of our result is 1. 
Result so far: 2043.31
Subtracting 774 from 1480 leaves us with 706.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7060, and continue the process.

Moving on to step 10:
The number 774 fits into 7060 9 times, leaving a remainder of 94.
Write down 9 as next digit of the result. 
Result so far: 2043.319
Deduct 6966 from 7060 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 11:
If we divide 940 by 774, we get 1 and a remainder of 166.
Use 1 as the next digit of our solution. 
Result so far: 2043.3191
If we subtract 774 from 940, we get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 12:
774 goes into 1660 2 times with a remainder of 112.
The next digit of our result is 2. 
Result so far: 2043.31912
Subtract 1548 from 1660 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 13:
The number 774 fits into 1120 1 times, leaving a remainder of 346.
Put 1 as the next digit of the answer. 
Result so far: 2043.319121
If we subtract 774 from 1120, we get 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Going ahead to step 14:
774 can be fit into 3460 4 times, resulting in a remainder of 364.
Put 4 as the next digit of the answer. 
Result so far: 2043.3191214
Subtract 3096 from 3460 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

Going ahead to step 15:
When dividing 3640 by 774, we get 4 with a remainder of 544.
Put 4 as the next digit of the answer. 
Result so far: 2043.31912144
The remainder is 544 after subtracting 3096 from 3640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

The final outcome is 2043.31912144, with a leftover of 5.44e-07.