931222 ÷ 78 
Our goal is to divide 931222 by 78.

Advancing to step 1:
78 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 78

Advancing to step 2:
The number 78 fits into 93 1 times, leaving a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 78 from 93, we get 15.
Bring next digit (1) of the dividend behind the 15 and repeat the process: 151 / 78

On to step 3:
When dividing 151 by 78, we get 1 with a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Deduct 78 from 151 and we're left with 73.
Fetch the next digit (2) from the dividend, attach it to 73 and continue: 732 / 78

On to step 4:
The number 78 fits into 732 9 times, leaving a remainder of 30.
Use 9 as the next digit of our solution. 
Result so far: 119.0
Subtracting 702 from 732 leaves us with 30.
Take the next digit (2) from the dividend and append it to 30, then repeat: 302 / 78

Step 5:
78 goes into 302 3 times with a remainder of 68.
Record the quotient 3 as the next digit in the result. 
Result so far: 1193.0
If we take 234 away from 302, we end up with 68.
Bring next digit (2) of the dividend behind the 68 and repeat the process: 682 / 78

Let's proceed to step 6:
The number 78 fits into 682 8 times, leaving a remainder of 58.
The next digit of our result is 8. 
Result so far: 11938.0
Subtract 624 from 682 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 7:
78 goes into 580 7 times with a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 11938.7
The remainder is 34 after subtracting 546 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 8:
78 goes into 340 4 times with a remainder of 28.
The next digit of our result is 4. 
Result so far: 11938.74
The remainder is 28 after subtracting 312 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 9:
The number 78 fits into 280 3 times, leaving a remainder of 46.
Write down 3 as next digit of the result. 
Result so far: 11938.743
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 10:
78 goes into 460 5 times with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 11938.7435
The remainder is 70 after subtracting 390 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 11:
The number 78 fits into 700 8 times, leaving a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 11938.74358
Deduct 624 from 700 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Advancing to step 12:
78 can be fit into 760 9 times, resulting in a remainder of 58.
The number 9 becomes the next digit in our result. 
Result so far: 11938.743589
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 13:
78 goes into 580 7 times with a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 11938.7435897
The remainder is 34 after subtracting 546 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

On to step 14:
78 goes into 340 4 times with a remainder of 28.
The number 4 becomes the next digit in our result. 
Result so far: 11938.74358974
If we subtract 312 from 340, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The final outcome is 11938.74358974, with a leftover of 2.8e-08.