A book has 380 pages in total, and the typesetting worker in the printing factory needs to use a total of how many typefaces to arrange the book.
一本书共380页，印刷厂的排版工人编排这本书，仅排页码一共要用多少个铅字．
<gadget id="calculator">90 * 2</gadget>
<output>180</output>

<gadget id="calculator">281 * 3</gadget>
<output>843</output>

<gadget id="calculator">9 + 180 + 843</gadget>
<output>1_032</output>

<result>1_032</result>