Jodi starts off walking 1 mile a day for 6 days a week.  On the second week, she walks 2 miles a day, 6 days a week.  On the third week, she walks 3 miles a day, 6 days a week. Finally on the fourth week, she walks 4 miles a day, 6 days a week.  How many miles has she walked in 4 weeks?
The first week she walked 1 mile, 6 days a week for a total of 1*6 = 
<gadget id="calculator">1*6</gadget>
<output>6</output>
6 miles.
The second week she walked 2 miles, 6 days a week for a total of 2*6 = 
<gadget id="calculator">2*6</gadget>
<output>12</output>
12 miles.
The third week she walked 3 miles, 6 days a week for a total of 3*6 = 
<gadget id="calculator">3*6</gadget>
<output>18</output>
18 miles.
On the fourth week, she walked 4 miles, 6 days a week for a total of 4*6 = 
<gadget id="calculator">4*6</gadget>
<output>24</output>
24 miles.
Over four weeks she has walked 6+12+18+24 = 
<gadget id="calculator">6+12+18+24</gadget>
<output>60</output>
60 miles.

<result>60</result>