my Rat @ex01 = 1.0 , * + 0.9999 ... Inf;
my Rat @ex02 = 1.0 , * - 0.9999 ... Inf;
my Rat @ex03 = 1.0 , * * 0.9999 ... Inf;
my Rat @ex04 = 1.0 , * / 0.9999 ... Inf;
my Rat @ex05 = 1.0 , * % 0.9999 ... Inf;
my %ex = :add(@ex01), :substrat(@ex02), :mult(@ex03),
div(@ex04), mod(@ex05);

try {
	for < add substrat mult div mod > -> $op {
		for 1 .. 20 -> $count {
			.say;
			(%ex{$op})[$count]
		}
	}
}