Google PageRank is a rough measure of the popularity and authority of a website. The larger

the PageRank, the more popular the website. PageRank is a logarithmic scale. As a website's

popularity increases multiplicatively by a factor of $10,$ PageRank increases linearly by $1.$ The

site

kahoot.com $($which is a game$-$based learning platform used in schools$)$ has a PageRank

of $5\mathrm{.}89$ whereas

amazon.com has a PageRank of $8\mathrm{.}68.$ Approximately how many times more

popular is Amazon than Kahoot?