There are 141 gold balloons and twice as many silver balloons. If the gold and silver balloons were added to 150 black balloons, how many balloons are there in total?
Gold = 
<gadget id="calculator">141</gadget>
<output>141</output>
141.
Silver = 141 * 2 = 
<gadget id="calculator">141*2</gadget>
<output>282</output>
282
141 + 282 + 150 = 
<gadget id="calculator">141+282+150</gadget>
<output>573</output>
573.
There are 573 gold, silver, and black balloons in total.

<result>573</result>