The sum of the numbers A and B is 4.75. If the decimal point of A is moved to the left by one bit, it is equal to (3/8) of the number B. What is the number A?
甲、乙两数的和是4.75，若甲的小数点向左移动一位就等于乙数的(3/8)，则甲数是多少．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

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

<gadget id="calculator">(3/8) / (1/10)</gadget>
<output>15/4 = around 3.75</output>

<gadget id="calculator">(15/4) + 1</gadget>
<output>19/4 = around 4.75</output>

<gadget id="calculator">4.75 / (19/4)</gadget>
<output>1</output>

<gadget id="calculator">4.75 - 1</gadget>
<output>3.75</output>

<result>3.75</result>