Template:Eval

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{{{{{subst|}}}#expr:{{{1}}}}}

Normal evaluation:

• {{eval|3/4}} gives 0.75.
• {{eval|3*4}} gives 12.
• {{eval|3+4}} gives 7.
• {{eval|3-4}} gives -1.
• {{eval|3 mod 4}} gives 3.

Error handling:

• {{eval|3/0}} gives [expression "3/0" is wrong] (division by 0 is undefined)

Nested error message:

• {{eval|1+{{eval|3/0}}}} gives [expression "1+[expression "3/0" is wrong]" is wrong].