User:Func/Sandbox3

{{#vardefine:count|0}}<!--
-->{{#vardefine:time1|1}}{{while|condition=<nowiki>{{#ifexpr: {{#var:time1}} <= 5 | true }}</nowiki>|do=
  {{#vardefine:time2|1}}{{while|condition={{#ifexpr: {{#var:time2}} <= 100 | true }}|do=
    {{#vardefine:count| {{#expr: {{#var:count}} + {{#var:time1}} * {{#var:time2}} }} }} 
  }}
{{#vardefine:time| {{#expr: {{#var:time}} + 1 }} }}
}}
结果：{{#var:count}}

结果：1