A carton of ice cream contains 10 scoops each.  Mary has 3 cartons of ice cream, one chocolate, one strawberry and one vanilla.  Ethan wants one scoop of vanilla and one of chocolate.  Lucas, Danny and Connor all want 2 scoops of chocolate.  Olivia would like a scoop of vanilla and one of strawberry.  Shannon wants twice as much as Olivia.  How many scoops of ice cream will be left?
The total number of scoops of ice cream that Mary has is 3 cartons * 10 scoops = 
<gadget id="calculator">3*10</gadget>
<output>30</output>
30 scoops of ice cream.
Lucas, Danny and Connor will eat 2 scoops * 3 people = 
<gadget id="calculator">2*3</gadget>
<output>6</output>
6 scoops of ice cream.
Shannon will eat 2 * (1 vanilla + 1 strawberry) = 
<gadget id="calculator">2*(1+1)</gadget>
<output>4</output>
4 total scoops of ice cream.
Combined the kids will eat a total of 2 + 6 + 2 + 4 scoops = 
<gadget id="calculator">2+6+2+4</gadget>
<output>14</output>
14 scoops of ice cream.
Mary will have 30 scoops - 14 scoops = 
<gadget id="calculator">30-14</gadget>
<output>16</output>
16 scoops of ice cream remaining.

<result>16</result>