Corn contains 22 mg of calcium per 100 grams, which is less than that of millet (9/20). How many milligrams of calcium per 100 grams of millet?
每百克玉米含钙22毫克，比每百克小米的含钙量少(9/20)．每百克小米含钙多少毫克？
<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">1 - (9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">22 / (11/20)</gadget>
<output>40</output>

<result>40</result>