Jake is walking through the Museum of Entomology. He sees 80 spiders with 8 legs each, 90 insects with 6 legs each, and 3 rare mutant invertebrates with 10 legs each. How many legs does Jake see total?
First find the total number of spider legs: 80 spiders * 8 legs/spider = 
<gadget id="calculator">80*8</gadget>
<output>640</output>
640 legs.
Then find the total number of insect legs: 90 spiders * 6 legs/spider = 
<gadget id="calculator">90*6</gadget>
<output>540</output>
540 legs.
Then find the total number of mutant invertebrate legs: 3 mutants * 10 legs/mutant = 
<gadget id="calculator">3*10</gadget>
<output>30</output>
30 legs.
Then add the number of each kind of leg to find the total he saw: 640 legs + 540 legs + 30 legs = 
<gadget id="calculator">640+540+30</gadget>
<output>1_210</output>
1210 legs.

<result>1_210</result>