Write according to 12345679*9=111111111 (according to the expansion of textbooks) 12345679*18=222222222: 12345679*72=how much.
根据12345679*9=111111111(依据教材拓展)12345679*18=222222222写出：12345679*72=多少．
<gadget id="calculator">12_345_679 * 72</gadget>
<output>888_888_888</output>

<result>888_888_888</result>