We're dividing 946578 by 77 
Our goal is to divide 946578 by 77.

Going ahead to step 1:
If we divide 9 by 77, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (4) from the dividend, attach it to 9 and continue: 94 / 77

On to step 2:
The number 77 fits into 94 1 times, leaving a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 77 from 94 leaves us with 17.
Bring next digit (6) of the dividend behind the 17 and repeat the process: 176 / 77

On to step 3:
77 can be fit into 176 2 times, resulting in a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtracting 154 from 176 leaves us with 22.
Fetch the next digit (5) from the dividend, attach it to 22 and continue: 225 / 77

Step 4:
If we divide 225 by 77, we get 2 and a remainder of 71.
Put 2 as the next digit of the answer. 
Result so far: 122.0
If we subtract 154 from 225, we get 71.
Fetch the next digit (7) from the dividend, attach it to 71 and continue: 717 / 77

Step 5:
If we divide 717 by 77, we get 9 and a remainder of 24.
Use 9 as the next digit of our solution. 
Result so far: 1229.0
Subtract 693 from 717 to get 24.
Include the next digit (8) from the dividend after 24, then repeat: 248 / 77

Advancing to step 6:
The number 77 fits into 248 3 times, leaving a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 12293.0
If we subtract 231 from 248, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 7:
77 can be fit into 170 2 times, resulting in a remainder of 16.
The next digit of our result is 2. 
Result so far: 12293.2
Subtract 154 from 170 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 8:
77 can be fit into 160 2 times, resulting in a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 12293.22
The remainder is 6 after subtracting 154 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 12293.22, with a leftover of 0.006.