How many small squares are there in a rectangle with a length of 5 cm and a width of 3 cm?
长5厘米，宽3厘米的长方形里面有多少个边长是1厘米的小正方形．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">5 * 3</gadget>
<output>15</output>

<result>15</result>