Parser function examples

 {{#expr: 1 + 5}}

 {{#expr: 1.0 + 1.5}}

 {{#expr: 1/3 round 5 }}

Number of physicists: [[NumberOfPhysicists::{{#ask: [[Category:PPersons]]|format=count|default=0}}]]

6

2.5

0.33333

Number of physicists: 8