The sum of the two numbers A and B is 162, and moving the decimal point of A to the left by one bit is equal to (4/5) of B, so what is A?
甲、乙两个数的和是162，甲数的小数点向左移动一位就等于乙数的(4/5)，则甲数是多少．
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">162 * (4/5)</gadget>
<output>648/5 = around 129.6</output>

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">(1/10) + (4/5)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(648/5) / (9/10)</gadget>
<output>144</output>

<result>144</result>