We're dividing 3905 by 72 
We're looking to find how many times 72 goes into 3905.

Going ahead to step 1:
3 divided by 72 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 72

Going ahead to step 2:
72 can be fit into 39 0 times, resulting in a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 39, we end up with 39.
Grab the next digit (0) from the dividend, add it to 39, then carry on: 390 / 72

Let's proceed to step 3:
72 goes into 390 5 times with a remainder of 30.
The next digit of our result is 5. 
Result so far: 5.0
The remainder is 30 after subtracting 360 from 390.
Include the next digit (5) from the dividend after 30, then repeat: 305 / 72

Going ahead to step 4:
The number 72 fits into 305 4 times, leaving a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 54.0
Deduct 288 from 305 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 5:
170 divided by 72 is 2 with a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 54.2
Subtracting 144 from 170 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 6:
72 goes into 260 3 times with a remainder of 44.
Write down 3 as next digit of the result. 
Result so far: 54.23
The remainder is 44 after subtracting 216 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 7:
72 can be fit into 440 6 times, resulting in a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 54.236
The remainder is 8 after subtracting 432 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
72 can be fit into 80 1 times, resulting in a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 54.2361
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
72 can be fit into 80 1 times, resulting in a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 54.23611
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

In conclusion, the division gives 54.23611 with a balance of 8e-06.