We look at the division of 781901 by 77 
Let's see how many times 77 fits into 781901.

Going ahead to step 1:
When dividing 7 by 77, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 77

Let's proceed to step 2:
When dividing 78 by 77, we get 1 with a remainder of 1.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 1 after subtracting 77 from 78.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 77

Going ahead to step 3:
77 can be fit into 11 0 times, resulting in a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 11, we get 11.
Grab the next digit (9) from the dividend, add it to 11, then carry on: 119 / 77

Going ahead to step 4:
119 divided by 77 is 1 with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
The remainder is 42 after subtracting 77 from 119.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 77

Going ahead to step 5:
77 goes into 420 5 times with a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 1015.0
Subtracting 385 from 420 leaves us with 35.
Take the next digit (1) from the dividend and append it to 35, then repeat: 351 / 77

Advancing to step 6:
When dividing 351 by 77, we get 4 with a remainder of 43.
Use 4 as the next digit of our solution. 
Result so far: 10154.0
Subtract 308 from 351 to get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Let's proceed to step 7:
If we divide 430 by 77, we get 5 and a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 10154.5
Subtract 385 from 430 to get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 8:
When dividing 450 by 77, we get 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 10154.55
Subtract 385 from 450 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

The final outcome is 10154.55, with a leftover of 0.065.