A ribbon is 916 cm long. Mr. Wang used half of the ribbon for gift wrapping, and half of the remaining ribbon for the flower basket. How many centimeters of ribbon did you use for the flower basket?
一根彩带长916厘米，王老师包扎礼品用去了这根彩带的一半，扎花篮又用去了剩下彩带的一半，扎花篮用去了多少厘米彩带？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">916 * (1/2)</gadget>
<output>458</output>

<gadget id="calculator">916 - 458</gadget>
<output>458</output>

<gadget id="calculator">458 * (1/2)</gadget>
<output>229</output>

<result>229</result>