985801 divided by 78 
The aim is to understand the frequency of 78 in 985801.

Advancing to step 1:
9 divided by 78 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 78

Step 2:
The number 78 fits into 98 1 times, leaving a remainder of 20.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 20 after subtracting 78 from 98.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 78

Advancing to step 3:
The number 78 fits into 205 2 times, leaving a remainder of 49.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 156 from 205 and we're left with 49.
Append the next digit (8) from the dividend to 49 and continue with: 498 / 78

On to step 4:
If we divide 498 by 78, we get 6 and a remainder of 30.
Use 6 as the next digit of our solution. 
Result so far: 126.0
The remainder is 30 after subtracting 468 from 498.
Grab the next digit (0) from the dividend, add it to 30, then carry on: 300 / 78

Moving on to step 5:
300 divided by 78 is 3 with a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 1263.0
The remainder is 66 after subtracting 234 from 300.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 78

Going ahead to step 6:
78 goes into 661 8 times with a remainder of 37.
Record the quotient 8 as the next digit in the result. 
Result so far: 12638.0
Subtracting 624 from 661 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 7:
78 can be fit into 370 4 times, resulting in a remainder of 58.
Write down 4 as next digit of the result. 
Result so far: 12638.4
If we subtract 312 from 370, we 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.

Advancing to step 8:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 12638.47
Subtracting 546 from 580 leaves us with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 9:
78 can be fit into 340 4 times, resulting in a remainder of 28.
The next digit of our result is 4. 
Result so far: 12638.474
Subtract 312 from 340 to 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.

On to step 10:
The number 78 fits into 280 3 times, leaving a remainder of 46.
Use 3 as the next digit of our solution. 
Result so far: 12638.4743
If we subtract 234 from 280, we get 46.
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 11:
When dividing 460 by 78, we get 5 with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 12638.47435
If we take 390 away from 460, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Moving on to step 12:
78 goes into 700 8 times with a remainder of 76.
Put 8 as the next digit of the answer. 
Result so far: 12638.474358
Subtract 624 from 700 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Let's proceed to step 13:
78 goes into 760 9 times with a remainder of 58.
Use 9 as the next digit of our solution. 
Result so far: 12638.4743589
Subtract 702 from 760 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.

Step 14:
The number 78 fits into 580 7 times, leaving a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 12638.47435897
Subtract 546 from 580 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The quotient of the division is 12638.47435897, and the remainder is 3.4e-08.