Multiply in the indicated base

304
X 5
34
5
__________

3045*345

Do an ordinary multiplication, except carry whenever there is 5 (and not 10).

The format at this site does not allow digits to be aligned, so there is no point showing the multiplication.

A simple case could be:
125*45
4*2=8=135
4*1=45+carry=105
So the answer is 1035.

553seven

x 5seven

To multiply the numbers in the indicated base, follow these steps:

Step 1: Set up the multiplication problem vertically, with the multiplicand (304) on top of the multiplier (5).

304
X 5

Step 2: Start by multiplying the rightmost digit of the multiplicand (4) by the multiplier (5). Write the result under the line.

304
X 5
------
20


Step 3: Move to the next digit of the multiplicand (0) and multiply it by the multiplier (5).

304
X 5
------
20
+
0

Step 4: Write the result under the previous digit's result, shifting it to the left by one position.

304
X 5
------
20
+
0


Step 5: Finally, move to the leftmost digit of the multiplicand (3) and multiply it by the multiplier (5). Write the result under the line.

304
X 5
------
20
+
0
15

Step 6: Add up all the results.

304
X 5
------
20
+
0
15
------
1520

So, in the indicated base, 304 multiplied by 5 equals 1520.