PS ... didn't use a calculator although there's a perfectly good one in Windows and on the phone. I should have twigged the answer was wrong straight off but I was tired and shagged out after a long squawk. 
__________________
"I say we take off, nuke the site from orbit. It's the only way to be sure."
Corporal Hicks
(Actually Ripley said it first.)
Last edited by BobClay; 11th September 2021 at 14:49.
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