A school is planning a community outreach program. Each classroom must raise $200 for this activity. Classroom A has raised $20 from each of two families, $10 from each of eight families, and $5  from each of ten families. How much more money does Classroom A need in order to reach the goal?
Classroom A raised 2 x $20 = $
<gadget id="calculator">2*20</gadget>
<output>40</output>
40 from two families.
They raised 8 x $10 = $
<gadget id="calculator">8*10</gadget>
<output>80</output>
80 from eight families.
They raised 10 x $5 = $
<gadget id="calculator">10*5</gadget>
<output>50</output>
50 from ten families.
Altogether, they raised $40 + $80 + $50 = $
<gadget id="calculator">40+80+50</gadget>
<output>170</output>
170.
Therefore, they need $200 - $170 = $
<gadget id="calculator">200-170</gadget>
<output>30</output>
30 more to reach the goal.

<result>30</result>