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# format_number()
ok 1 - format_number() takes a number as its first argument
ok 2 # TODO format_number() takes the current user culture if no second argument is given
ok 3 - format_currency() takes a number as its first argument
ok 4 - format_currency() takes a number as its first argument
ok 5 - format_currency() takes a number as its first argument
ok 6 - format_currency() takes a number as its first argument
ok 7 - format_currency() takes a number as its first argument
 Looks like everything went fine.