Jack had $100. Sophia gave him 1/5 of her $100. How many dollars does Jack have now?
Sophia gave 100 * 1/5 =
<gadget id="calculator">100*1/5</gadget>
<output>20</output>
20 $ to Jack.
Jack now has 100 + 20 = 
<gadget id="calculator">100+20</gadget>
<output>120</output>
120$

<result>120</result>