78558042 divided by 408 
Let's see how many times 408 fits into 78558042.

On to step 1:
The number 408 fits into 7 0 times, leaving a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 408

Going ahead to step 2:
If we divide 78 by 408, we get 0 and a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Grab the next digit (5) from the dividend, add it to 78, then carry on: 785 / 408

Let's proceed to step 3:
408 goes into 785 1 times with a remainder of 377.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 408 from 785 to get 377.
Take the next digit (5) from the dividend and append it to 377, then repeat: 3775 / 408

Step 4:
3775 divided by 408 is 9 with a remainder of 103.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
Subtract 3672 from 3775 to get 103.
Take the next digit (8) from the dividend and append it to 103, then repeat: 1038 / 408

Going ahead to step 5:
408 goes into 1038 2 times with a remainder of 222.
Record the quotient 2 as the next digit in the result. 
Result so far: 192.0
The remainder is 222 after subtracting 816 from 1038.
Append the next digit (0) from the dividend to 222 and continue with: 2220 / 408

Step 6:
2220 divided by 408 is 5 with a remainder of 180.
Write down 5 as next digit of the result. 
Result so far: 1925.0
Deduct 2040 from 2220 and we're left with 180.
Append the next digit (4) from the dividend to 180 and continue with: 1804 / 408

Going ahead to step 7:
When dividing 1804 by 408, we get 4 with a remainder of 172.
Use 4 as the next digit of our solution. 
Result so far: 19254.0
Subtract 1632 from 1804 to get 172.
Take the next digit (2) from the dividend and append it to 172, then repeat: 1722 / 408

Let's proceed to step 8:
When dividing 1722 by 408, we get 4 with a remainder of 90.
Record the quotient 4 as the next digit in the result. 
Result so far: 192544.0
If we subtract 1632 from 1722, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 9:
When dividing 900 by 408, we get 2 with a remainder of 84.
Record the quotient 2 as the next digit in the result. 
Result so far: 192544.2
Subtract 816 from 900 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 10:
The number 408 fits into 840 2 times, leaving a remainder of 24.
Put 2 as the next digit of the answer. 
Result so far: 192544.22
Deduct 816 from 840 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 192544.22, with a leftover of 0.024.