The ratio of A, B, and C is 1:3:4. The average of these three numbers is 16. What is A's number?
甲、乙丙三个数的比是1：3：4，这三个数的平均数是16，甲数是多少．
<gadget id="calculator">16 * 3</gadget>
<output>48</output>

<gadget id="calculator">1 + 3 + 4</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">48 * (1/8)</gadget>
<output>6</output>

<result>6</result>