"The number A is 840, ________, what is the number B?" When finding the number B, one method is: if the number B is X, the equation X+(2/3)X=840 can be obtained, then the horizontal line should be supplemented The condition is how much more number A is than number B
"甲数是840，________，乙数是多少？"在求乙数时，一种方法为：设乙数是X，可得方程X+(2/3)X=840，那么横线上应补充的条件是甲数比乙数多多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>