On one side of a corridor, the distance between placing 8 pots of roses is 42 decimeters. According to this calculation, what is the distance between placing 20 pots of roses?
在一条走廊一边，每放8盆月季花的距离是42分米，照这样计算，放20盆月季花的距离是多少．
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">42 / 7</gadget>
<output>6</output>

<gadget id="calculator">20 - 1</gadget>
<output>19</output>

<gadget id="calculator">6 * 19</gadget>
<output>114</output>

<result>114</result>