Xiaoqiao starts from point A of the counting ray, firstly walks 42 squares to the right, then walks 20 squares to the left, 11 squares to the right, 17 squares to the left and stops at point B. If both Megs indicate 0.1, then the distance between A and B How many
小巧从数射线A点出发，先向右走42格，再依次向左走20格，向右走11格，向左走17格停在B点，如果梅格都表示0.1，那么AB间相距多少
<gadget id="calculator">42 - 20</gadget>
<output>22</output>

<gadget id="calculator">11 - 17</gadget>
<output>-6</output>

<gadget id="calculator">22 + (-6)</gadget>
<output>16</output>

<gadget id="calculator">16 * 0.1</gadget>
<output>1.6</output>

<result>1.6</result>