Chantal knits sweaters to sell. Each sweater takes 4 balls of yarn. Each ball of yarn costs $6. How much money will Chantal gain in all 28 sweaters if she sells each sweater for $35?
The 28 sweaters need 28 x 4 = 
<gadget id="calculator">28*4</gadget>
<output>112</output>
112 balls of yarn.
So, Chantal will spend 112 x $6 = $
<gadget id="calculator">112*6</gadget>
<output>672</output>
672 in all for the balls of yarn.
Her total earnings for selling 28 sweaters is $35 x 28 = $
<gadget id="calculator">35*28</gadget>
<output>980</output>
980.
Therefore, Chantal will gain $980 - $672 = $
<gadget id="calculator">980-672</gadget>
<output>308</output>
308.

<result>308</result>