auto a = UInt!128.fromHexString("afbbfae3cd0aff2714a1de7022b0029d");
assert(a / UInt!128.fromHexString("5") == UInt!128.fromHexString("23259893f5ceffd49db9f949a0899a1f"));
assert(a == UInt!128.fromHexString("afbbfae3cd0aff2714a1de7022b0029d"));
assert(a % UInt!128.fromHexString("5") == UInt!128.fromHexString("2"));
assert(a == UInt!128.fromHexString("afbbfae3cd0aff2714a1de7022b0029d"));

assert(a / 5 == UInt!128.fromHexString("23259893f5ceffd49db9f949a0899a1f"));
assert(a % 5 == UInt!64.fromHexString("2"));
assert(a % 5 == 2);