78246398 ÷ 153 
We want to figure out the number of times 78246398 can be divided by 153.

Moving on to step 1:
7 divided by 153 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 153

Step 2:
153 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 take 0 away from 78, we end up with 78.
Fetch the next digit (2) from the dividend, attach it to 78 and continue: 782 / 153

On to step 3:
153 goes into 782 5 times with a remainder of 17.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 765 from 782, we get 17.
Take the next digit (4) from the dividend and append it to 17, then repeat: 174 / 153

Advancing to step 4:
The number 153 fits into 174 1 times, leaving a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 51.0
Deduct 153 from 174 and we're left with 21.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 153

On to step 5:
153 can be fit into 216 1 times, resulting in a remainder of 63.
Record the quotient 1 as the next digit in the result. 
Result so far: 511.0
If we subtract 153 from 216, we get 63.
Fetch the next digit (3) from the dividend, attach it to 63 and continue: 633 / 153

Step 6:
153 goes into 633 4 times with a remainder of 21.
Use 4 as the next digit of our solution. 
Result so far: 5114.0
Subtracting 612 from 633 leaves us with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 153

Going ahead to step 7:
If we divide 219 by 153, we get 1 and a remainder of 66.
Record the quotient 1 as the next digit in the result. 
Result so far: 51141.0
If we take 153 away from 219, we end up with 66.
Take the next digit (8) from the dividend and append it to 66, then repeat: 668 / 153

Going ahead to step 8:
When dividing 668 by 153, we get 4 with a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 511414.0
Subtracting 612 from 668 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 9:
153 can be fit into 560 3 times, resulting in a remainder of 101.
Put 3 as the next digit of the answer. 
Result so far: 511414.3
Deduct 459 from 560 and we're left with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Advancing to step 10:
153 goes into 1010 6 times with a remainder of 92.
The number 6 becomes the next digit in our result. 
Result so far: 511414.36
Subtract 918 from 1010 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 11:
153 goes into 920 6 times with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 511414.366
Subtract 918 from 920 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

The final result is 511414.366 with a remainder of 0.0002.