13401392 ÷ 977 
Our goal is to divide 13401392 by 977.

Step 1:
The number 977 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 977

Let's proceed to step 2:
If we divide 13 by 977, we get 0 and a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 13, we get 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 977

Going ahead to step 3:
977 can be fit into 134 0 times, resulting in a remainder of 134.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 134, we end up with 134.
Include the next digit (0) from the dividend after 134, then repeat: 1340 / 977

Advancing to step 4:
The number 977 fits into 1340 1 times, leaving a remainder of 363.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 977 from 1340 leaves us with 363.
Include the next digit (1) from the dividend after 363, then repeat: 3631 / 977

Step 5:
977 goes into 3631 3 times with a remainder of 700.
The next digit of our result is 3. 
Result so far: 13.0
Subtract 2931 from 3631 to get 700.
Bring next digit (3) of the dividend behind the 700 and repeat the process: 7003 / 977

Step 6:
If we divide 7003 by 977, we get 7 and a remainder of 164.
Put 7 as the next digit of the answer. 
Result so far: 137.0
Subtract 6839 from 7003 to get 164.
Grab the next digit (9) from the dividend, add it to 164, then carry on: 1649 / 977

Moving on to step 7:
977 can be fit into 1649 1 times, resulting in a remainder of 672.
Write down 1 as next digit of the result. 
Result so far: 1371.0
If we subtract 977 from 1649, we get 672.
Bring next digit (2) of the dividend behind the 672 and repeat the process: 6722 / 977

Step 8:
977 can be fit into 6722 6 times, resulting in a remainder of 860.
The next digit of our result is 6. 
Result so far: 13716.0
The remainder is 860 after subtracting 5862 from 6722.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8600, and continue the process.

Step 9:
977 goes into 8600 8 times with a remainder of 784.
The number 8 becomes the next digit in our result. 
Result so far: 13716.8
Subtracting 7816 from 8600 leaves us with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

Advancing to step 10:
7840 divided by 977 is 8 with a remainder of 24.
Write down 8 as next digit of the result. 
Result so far: 13716.88
If we subtract 7816 from 7840, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 13716.88, with a leftover of 0.024.