A new toothpaste is used for 10 days and there is still (2/3) left, and the remaining (3/4) is used later, what fraction of the new toothpaste is used later?
一支新牙膏用了10天后还剩(2/3)，后来又用去剩下的(3/4)，后来用去了这支新牙膏的几分之几？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(2/3) * (3/4)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>