my country has a vast territory and rich medicinal resources. There are more than 100 kinds of animal Chinese medicinal materials circulating in the market, which is about 1/9 of that of plant medicinal materials. How many kinds of plant medicinal materials are there?
我国幅员辽阔，药用资源丰富，市场上流通的动物类中药材约有100余种，约是植物类药材的(1/9)，植物类药材约有多少种．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">100 / (1/9)</gadget>
<output>900</output>

<result>900</result>