According to the arrangement rule of the following group of numbers, which number should be in the brackets? 0.1, 0.2, 0.4, 0.7
按照下面这组数的排列规律，括号里应该是哪个数？0.1、0.2、0.4、0.7多少
<gadget id="calculator">0.1 + 0.1 + 0.1 + 0.1 + 0.3 + 0.1 + 0.1 + 0.1 + 0.1</gadget>
<output>1.1</output>

<result>1.1</result>