The "5•12" earthquake caused about 300,000 houses to be collapsed and damaged in Shaanxi Province, which is 1/4 less than that in Gansu Province. How many thousand houses were collapsed and damaged in Gansu Province?
"5•12"大地震使陕西省共倒塌和损坏房屋约30万间，比甘肃省少(1/4)，甘肃省倒塌和损坏房屋约多少万间？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">30 / (3/4)</gadget>
<output>40</output>

<result>40</result>