The Jacksonville Walmart normally gets 120 customer complaints per day. That number increases by 1/3rd when they're short-staffed and this increases by another 20% when the self-checkout is broken. If the store was short-staffed and the self-checkout was broken for 3 days, how many complaints does the store get?
First find the number of complaints per day when the store is short-staffed: 120 complaints/day * 4/3 = 
<gadget id="calculator">120*4/3</gadget>
<output>160</output>
160 complaints/day.
Then find the number of complaints per day when the self-checkout is broken and they're short-staffed: 160 complaints/day * 1.2 = 
<gadget id="calculator">160*1.2</gadget>
<output>192</output>
192 complaints/day.
Then multiply the number of complaints per day by the number of days to find the total number of complaints: 192 complaints/day * 3 days = 
<gadget id="calculator">192*3</gadget>
<output>576</output>
576 complaints.

<result>576</result>