The sum of the two numbers of A and B is 18. If the number A (1/10) is given to the number B, the two numbers are exactly equal. The original number B is less than the number A.
甲乙两数的和是18，如果把甲数的(1/10)给乙数，两数恰好相等，原来乙数比甲数少多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10) - (1/10)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 + (4/5)</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">18 / (9/5)</gadget>
<output>10</output>

<gadget id="calculator">18 - 10</gadget>
<output>8</output>

<gadget id="calculator">10 - 8</gadget>
<output>2</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>