Before work, Hayden spends 5 minutes ironing his button-up shirt and 3 minutes ironing his pants.  He does this 5 days a week.  How many minutes does he iron over 4 weeks?
He spends 5 minutes ironing his shirt and 3 minutes ironing his pants so that's 5+3 = 
<gadget id="calculator">5+3</gadget>
<output>8</output>
8 minutes.
He does this every day for 5 days so that's 5*8 = 
<gadget id="calculator">5*8</gadget>
<output>40</output>
40 minutes.
After 4 weeks, Hayden has spent 4*40 = 
<gadget id="calculator">4*40</gadget>
<output>160</output>
160 minutes ironing his clothes.

<result>160</result>