The manager of local supermarket is considering installing Self$-$Serve Checkouts for customers. A study was undertaken involving $1054$ shoppers who were asked if they would use the Self$-$Serve Checkouts and were also asked if they would likely spend more money if they were installed. Data collected from the study revealed:

$459$ of the shoppers would use the Self$-$Serve Checkouts, with the other shoppers confirming they would not.

$17$ shoppers would use the Self$-$Serve Checkouts and would not spend more money if they were installed.

$262$ shoppers would not spend more money if they were installed.

A shopper from the study is chosen at random. What is the probability the shopper would use the Self$-$Serve Checkouts or they would spend more money if they were installed? $(3$ decimal places$)$