Marin and his neighbor Nancy each eat 4 apples a day. How many apples do they eat in 30 days?
In one day, Marin and Nancy eat 4 + 1 = 
<gadget id="calculator">4+1</gadget>
<output>5</output>
5 apples.
In 30 days, they eat 30 * 5 = 
<gadget id="calculator">30*5</gadget>
<output>150</output>
150 apples.

<result>150</result>