Clive is buying olives for dinner. He has $10 to spend and needs 80 olives. A jar of 20 olives costs $1.50. How much change will Clive have when he buys what he needs?
He needs 4 jars of olives because 80 / 20 = 
<gadget id="calculator">80/20</gadget>
<output>4</output>
4.
He will spend $6 because 4 x 1.5 = 
<gadget id="calculator">4*1.5</gadget>
<output>6</output>
6.
He will have $4 in change because 10 - 6 = 
<gadget id="calculator">10-6</gadget>
<output>4</output>
4.

<result>4</result>