On 10 Jul 2019, Nick Andre said the following...
 
 NA> BF>    Enter 710 in your old calculator and look at it upside down and you
 NA> BF> understand why.
 NA> I prefer a pair of 8008's...
 NA> 

I know if you type 5002007 on a calculator then turn it upside down and try
to read it... You have too much spare time. :-)

--- Mystic BBS v1.12 A43 2019/03/03 (Raspberry Pi/32)