7 kilograms of grapes sell for 55 yuan, and the current price is 33 yuan. How many kilograms of grapes can you buy?
葡萄7千克售55元，现有33元，可以购买葡萄多少千克？
<gadget id="calculator">55 / 7</gadget>
<output>55/7 = around 7.857143</output>

<gadget id="calculator">33 / (55/7)</gadget>
<output>21/5 = around 4.2</output>

<result>21/5 = around 4.2</result>