Decimal.toString

assert(Decimal(123456, 3).toString == "123.456");
assert(Decimal(123000, 3).toString == "123.000");
assert(Decimal(123456, 0).toString == "123456");
assert(Decimal(123456, 6).toString == "0.123456");
assert(Decimal(1, 3).toString == "0.001");
assert(Decimal(123001, 3).toString == "123.001");
assert(Decimal(-123001, 3).toString == "-123.001", Decimal(-123001, 3).toString);