Xiao Ming and his puppy move forward to point b at the same place. When Xiao Ming reaches (1/4), his puppy has (1/4) left to go. The puppy continues to move forward, and when it reaches point b, turn around and return , meet Xiao Ming, then turn around and go forward, and then return to meet Xiao Ming, and repeat this until Xiao Ming reaches point b. The puppy has traveled a total of 450 meters. Find the distance of this road.
小明和他的小狗同一地向b地前进，小明行到(1/4)时，他的小狗，还剩(1/4)没行，小狗继续前进，到达b地时，转身返回，与小明相遇，然后掉头前进，再返回与小明相遇，这样一直反复，直到小明到达b地，小狗总共行了450米，求这段路的距离．
<gadget id="calculator">450 / 3</gadget>
<output>150</output>

<result>150</result>