A has 45 pencils, of which red pencils account for (4/9), the number of pencils owned by B is three times the number of red pencils of A, how many more pencils does B have than A?
甲有45枝铅笔，其中红铅笔的占(4/9)，乙有铅笔的枝数是甲红铅笔枝数的3倍，乙铅笔枝数比甲多多少枝？
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">45 * (4/9) * 3</gadget>
<output>60</output>

<gadget id="calculator">60 - 45</gadget>
<output>15</output>

<result>15</result>