We divide 15431719 by 772
We want to figure out the number of times 15431719 can be divided by 772.

Moving on to step 1:
When dividing 1 by 772, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 772

Step 2:
When dividing 15 by 772, we get 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 772

Step 3:
772 can be fit into 154 0 times, resulting in a remainder of 154.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 154, we get 154.
Append the next digit (3) from the dividend to 154 and continue with: 1543 / 772

Going ahead to step 4:
772 goes into 1543 1 times with a remainder of 771.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 772 from 1543 leaves us with 771.
Take the next digit (1) from the dividend and append it to 771, then repeat: 7711 / 772

Let's proceed to step 5:
772 goes into 7711 9 times with a remainder of 763.
The next digit of our result is 9. 
Result so far: 19.0
Subtracting 6948 from 7711 leaves us with 763.
Include the next digit (7) from the dividend after 763, then repeat: 7637 / 772

Step 6:
772 goes into 7637 9 times with a remainder of 689.
The next digit of our result is 9. 
Result so far: 199.0
If we subtract 6948 from 7637, we get 689.
Grab the next digit (1) from the dividend, add it to 689, then carry on: 6891 / 772

Advancing to step 7:
If we divide 6891 by 772, we get 8 and a remainder of 715.
The next digit of our result is 8. 
Result so far: 1998.0
Deduct 6176 from 6891 and we're left with 715.
Append the next digit (9) from the dividend to 715 and continue with: 7159 / 772

Step 8:
772 goes into 7159 9 times with a remainder of 211.
Put 9 as the next digit of the answer. 
Result so far: 19989.0
Subtract 6948 from 7159 to get 211.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

Advancing to step 9:
772 goes into 2110 2 times with a remainder of 566.
The number 2 becomes the next digit in our result. 
Result so far: 19989.2
If we take 1544 away from 2110, we end up with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Let's proceed to step 10:
772 goes into 5660 7 times with a remainder of 256.
The next digit of our result is 7. 
Result so far: 19989.27
Subtract 5404 from 5660 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Advancing to step 11:
2560 divided by 772 is 3 with a remainder of 244.
Write down 3 as next digit of the result. 
Result so far: 19989.273
If we subtract 2316 from 2560, we get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Going ahead to step 12:
When dividing 2440 by 772, we get 3 with a remainder of 124.
Record the quotient 3 as the next digit in the result. 
Result so far: 19989.2733
If we take 2316 away from 2440, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Our division results in 19989.2733 with a remaining 0.00124.