640 kg of cabbage is imported from the market, the radish is of cabbage (5/8), the radish is of tomato (5/9), how many kilograms of tomatoes are imported?
菜场运进白菜640千克，运进萝卜是白菜的(5/8)，运进萝卜是西红柿的(5/9)，运进西红柿多少千克？
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(5/8) / (5/9)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">640 * (9/8)</gadget>
<output>720</output>

<result>720</result>