The construction site transported 15 tons of yellow sand, but the amount of cement shipped was less than the tonnage of yellow sand (2/3). How many tons more yellow sand is shipped than cement?
建筑工地运来黄砂15吨，运来的水泥比黄砂的吨数少(2/3)．运来的黄砂比水泥多多少吨？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>