Grandpa Zhang always runs 3 laps around the 6-meter-long and 4-meter-wide flower bed every morning when he does morning exercises. How many meters does Grandpa Zhang run every morning?
张爷爷每天早晨晨练的时候总是绕着长6米，宽4米的花坛跑3圈，张爷爷每天早晨跑了多少米？
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">20 * 3</gadget>
<output>60</output>

<result>60</result>