My iPhone is doing math wrong
I get different results based on whether 1,8/0.083 is used or 1.8/0.083 is used both in spotlight on iOS and macOS.  It would appear that the comma , is ignored and the number is treated as non decimal.

Attached are the results.  One could verify if the region settings make a difference by changing them temporarily to UK or another region.

iOS:





macOS:





Compare Wolfram Alpha results: