An apple weighs 70 kilograms, which is 30% less than an orange. How many kilograms does an orange weigh?
苹果有70千克，比桔子少30%，桔子有多少千克？
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">70 / (7/10)</gadget>
<output>100</output>

<result>100</result>