Derrick measures the length of his yard. The length of Alex's yard is half the size of Derrick's and the length of Brianne's yard is 6 times the size of Alex's. If Brianne's yard is 30 yards long, how long is Derrick's yard, in yards?
The length of Alex's yard is 30/6=
<gadget id="calculator">30/6</gadget>
<output>5</output>
5 yards.
The length of Derrick's yard is 5*2=
<gadget id="calculator">5*2</gadget>
<output>10</output>
10 yards.

<result>10</result>