78474542 divided by 543 
We want to figure out the number of times 78474542 can be divided by 543.

Step 1:
If we divide 7 by 543, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 543

On to step 2:
543 can be fit into 78 0 times, resulting in a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 78, we get 78.
Take the next digit (4) from the dividend and append it to 78, then repeat: 784 / 543

Moving on to step 3:
The number 543 fits into 784 1 times, leaving a remainder of 241.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 543 from 784 leaves us with 241.
Grab the next digit (7) from the dividend, add it to 241, then carry on: 2417 / 543

Let's proceed to step 4:
When dividing 2417 by 543, we get 4 with a remainder of 245.
Write down 4 as next digit of the result. 
Result so far: 14.0
The remainder is 245 after subtracting 2172 from 2417.
Grab the next digit (4) from the dividend, add it to 245, then carry on: 2454 / 543

Let's proceed to step 5:
When dividing 2454 by 543, we get 4 with a remainder of 282.
The next digit of our result is 4. 
Result so far: 144.0
If we take 2172 away from 2454, we end up with 282.
Include the next digit (5) from the dividend after 282, then repeat: 2825 / 543

Going ahead to step 6:
543 can be fit into 2825 5 times, resulting in a remainder of 110.
Record the quotient 5 as the next digit in the result. 
Result so far: 1445.0
Deduct 2715 from 2825 and we're left with 110.
Bring next digit (4) of the dividend behind the 110 and repeat the process: 1104 / 543

On to step 7:
When dividing 1104 by 543, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 14452.0
Subtracting 1086 from 1104 leaves us with 18.
Append the next digit (2) from the dividend to 18 and continue with: 182 / 543

Advancing to step 8:
When dividing 182 by 543, we get 0 with a remainder of 182.
The number 0 becomes the next digit in our result. 
Result so far: 144520.0
If we subtract 0 from 182, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Step 9:
If we divide 1820 by 543, we get 3 and a remainder of 191.
Put 3 as the next digit of the answer. 
Result so far: 144520.3
If we subtract 1629 from 1820, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 10:
543 can be fit into 1910 3 times, resulting in a remainder of 281.
Put 3 as the next digit of the answer. 
Result so far: 144520.33
If we take 1629 away from 1910, we end up with 281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2810, and continue the process.

After the division, we end up with 144520.33 and a remainder of 0.281.