There is a rectangular iron sheet with a length of 60 cm and a width of 45 cm. Another iron sheet has the same area as it, and its length is 50% of its length. What is its width in cm?
有一个长方形铁皮，长60cm，宽45cm，另一块铁皮的面积和它相等，长是它的50%，宽是多少cm？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">60 * (1/2)</gadget>
<output>30</output>

<gadget id="calculator">45 / 30</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">60 * (3/2)</gadget>
<output>90</output>

<result>90</result>