153960 ÷ 54 
We're looking to find how many times 54 goes into 153960.

Step 1:
The number 54 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 54

Step 2:
54 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 54

Moving on to step 3:
54 goes into 153 2 times with a remainder of 45.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 108 from 153 to get 45.
Fetch the next digit (9) from the dividend, attach it to 45 and continue: 459 / 54

Going ahead to step 4:
54 goes into 459 8 times with a remainder of 27.
Use 8 as the next digit of our solution. 
Result so far: 28.0
The remainder is 27 after subtracting 432 from 459.
Include the next digit (6) from the dividend after 27, then repeat: 276 / 54

Advancing to step 5:
276 divided by 54 is 5 with a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 285.0
If we subtract 270 from 276, we get 6.
Append the next digit (0) from the dividend to 6 and continue with: 60 / 54

On to step 6:
When dividing 60 by 54, we get 1 with a remainder of 6.
Record the quotient 1 as the next digit in the result. 
Result so far: 2851.0
Subtract 54 from 60 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 7:
If we divide 60 by 54, we get 1 and a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 2851.1
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
54 can be fit into 60 1 times, resulting in a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 2851.11
If we subtract 54 from 60, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 2851.11, with a leftover of 0.006.