Tim's website got 100 visitors a day for the first 6 days and then on the last day of the week it got twice as many visitors as every other day combined.  If he gets $.01 per visit how much did he make that week?
In the first 6 days, he got 6*100=
<gadget id="calculator">6*100</gadget>
<output>600</output>
600 visits.
So on the 7th day, he got 600*2=
<gadget id="calculator">600*2</gadget>
<output>1_200</output>
1200 visitors.
So he got a total of 1200+600=
<gadget id="calculator">1200+600</gadget>
<output>1_800</output>
1800 visitors.
That means he made 1800*.01=$
<gadget id="calculator">1800*.01</gadget>
<output>18</output>
18.

<result>18</result>