We look at the division of 78956455 by 409 
We're looking to find how many times 409 goes into 78956455.

Advancing to step 1:
If we divide 7 by 409, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 409

On to step 2:
When dividing 78 by 409, we get 0 with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Append the next digit (9) from the dividend to 78 and continue with: 789 / 409

Let's proceed to step 3:
The number 409 fits into 789 1 times, leaving a remainder of 380.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 409 from 789 and we're left with 380.
Grab the next digit (5) from the dividend, add it to 380, then carry on: 3805 / 409

Moving on to step 4:
If we divide 3805 by 409, we get 9 and a remainder of 124.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 3681 from 3805 to get 124.
Take the next digit (6) from the dividend and append it to 124, then repeat: 1246 / 409

Step 5:
If we divide 1246 by 409, we get 3 and a remainder of 19.
Use 3 as the next digit of our solution. 
Result so far: 193.0
Subtracting 1227 from 1246 leaves us with 19.
Include the next digit (4) from the dividend after 19, then repeat: 194 / 409

Advancing to step 6:
The number 409 fits into 194 0 times, leaving a remainder of 194.
Put 0 as the next digit of the answer. 
Result so far: 1930.0
Deduct 0 from 194 and we're left with 194.
Include the next digit (5) from the dividend after 194, then repeat: 1945 / 409

Moving on to step 7:
If we divide 1945 by 409, we get 4 and a remainder of 309.
Write down 4 as next digit of the result. 
Result so far: 19304.0
The remainder is 309 after subtracting 1636 from 1945.
Take the next digit (5) from the dividend and append it to 309, then repeat: 3095 / 409

Going ahead to step 8:
409 goes into 3095 7 times with a remainder of 232.
Put 7 as the next digit of the answer. 
Result so far: 193047.0
If we take 2863 away from 3095, we end up with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

On to step 9:
When dividing 2320 by 409, we get 5 with a remainder of 275.
The next digit of our result is 5. 
Result so far: 193047.5
Subtract 2045 from 2320 to get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Going ahead to step 10:
409 goes into 2750 6 times with a remainder of 296.
The next digit of our result is 6. 
Result so far: 193047.56
Subtracting 2454 from 2750 leaves us with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Step 11:
2960 divided by 409 is 7 with a remainder of 97.
Put 7 as the next digit of the answer. 
Result so far: 193047.567
Deduct 2863 from 2960 and we're left with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Going ahead to step 12:
When dividing 970 by 409, we get 2 with a remainder of 152.
Use 2 as the next digit of our solution. 
Result so far: 193047.5672
Subtracting 818 from 970 leaves us with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Step 13:
When dividing 1520 by 409, we get 3 with a remainder of 293.
The number 3 becomes the next digit in our result. 
Result so far: 193047.56723
Subtracting 1227 from 1520 leaves us with 293.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2930, and continue the process.

Advancing to step 14:
2930 divided by 409 is 7 with a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 193047.567237
Subtract 2863 from 2930 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 15:
409 can be fit into 670 1 times, resulting in a remainder of 261.
The next digit of our result is 1. 
Result so far: 193047.5672371
The remainder is 261 after subtracting 409 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

On to step 16:
The number 409 fits into 2610 6 times, leaving a remainder of 156.
Use 6 as the next digit of our solution. 
Result so far: 193047.56723716
If we take 2454 away from 2610, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

The final outcome is 193047.56723716, with a leftover of 1.56e-07.