Currency: store the rate in Y
A memory is handy for a conversion rate. Assume one dollar is 110 yen. Type 110, press 
and 
, the teal label above STO: 110.. How many dollars is 26,510 yen? Type 26510, press 
, then 
, , and 
. The answer is 241. dollars. And 2,750 dollars in yen? Type 2750, press 
, , , and . The answer is 302'500. yen.