Template:Round

{{#ifeq:{{#expr:{{{2}}}round0|{{{2}}}|{{#ifexpr:{{{2}}}<-3|{{rnd/+ }}}}|{{rnd/-|{{#expr:{{{1}}}round{{{2}}}}}|{{{2}}}}}}}|{{{1}}}}} This template rounds {{{1}}} to {{{2}}} decimal places (goes the other way for negatives), includes trailing zeros & avoids E notation.
 * {{{1}}}
 * (-({{{2}}}))mod3
 * {{#switch:{{#expr:{{{2}}}}}
 * -3| -4| -5=000
 * -6| -7| -8=000000
 * -9|-10|-11=000000000
 * -12|-13|-14=000000000000
 * -15|-16|-17=000000000000000
 * -18|-19|-20=000000000000000000
 * -21|-22|-23=000000000000000000000
 * -24|-25|-26=000000000000000000000000
 * -27|-28|-29=000000000000000000000000000
 * -30|-31|-32=000000000000000000000000000000
 * -33|-34|-35=000000000000000000000000000000000
 * -36|-37|-38=000000000000000000000000000000000000
 * -39|-40|-41=000000000000000000000000000000000000000
 * -42|-43|-44=000000000000000000000000000000000000000000
 * -45|-46|-47=000000000000000000000000000000000000000000000
 * -48|-49|-50=000000000000000000000000000000000000000000000000
 * -51|-52|-53=000000000000000000000000000000000000000000000000000
 * -54|-55|-56=000000000000000000000000000000000000000000000000000000
 * -57|-58|-59=000000000000000000000000000000000000000000000000000000000
 * -60|-61|-62=000000000000000000000000000000000000000000000000000000000000