Janeth bought 5 bags of round balloons with 20 balloons in each bag. She also bought 4 bags of long balloons with 30 balloons in each bag. While blowing up the balloons, 5 round balloons burst. How many balloons are left?
Janeth bought 5 x 20 = 
<gadget id="calculator">5*20</gadget>
<output>100</output>
100 round balloons.
She bought 4 x 30 = 
<gadget id="calculator">4*30</gadget>
<output>120</output>
120 long balloons.
So, she has a total of 100 + 120 = 
<gadget id="calculator">100+120</gadget>
<output>220</output>
220 balloons.
Since 5 round balloons burst, then there are only 220 - 5 = 
<gadget id="calculator">220-5</gadget>
<output>215</output>
215 balloons left.

<result>215</result>