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<includeonly>{{#ifeq:{{#expr:{{{2}}}round0}}|{{#expr:{{{2}}}}}|{{#ifexpr:{{{2}}}<-3|{{rnd/+
|{{{1}}}
|(-({{{2}}}))mod3
|-57|-58|-59=000000000000000000000000000000000000000000000000000000000
|-60|-61|-62=000000000000000000000000000000000000000000000000000000000000
}}}}|{{rnd/-|{{#expr:{{{1}}}round{{{2}}}}}|{{{2}}}}}}}|{{#expr:{{{1}}}}}}}</includeonly><noinclude>This template rounds {{{1}}} to {{{2}}} decimal places (goes the other way for negatives), includes trailing zeros & avoids E notation.</noinclude>