[New Hint] UINT256_MUL_DIV_MOD

[pefontana]

                "a = (ids.a.high << 128) + ids.a.low",
                "b = (ids.b.high << 128) + ids.b.low",
                "div = (ids.div.high << 128) + ids.div.low",
                "quotient, remainder = divmod(a * b, div)",
                "",
                "ids.quotient_low.low = quotient & ((1 << 128) - 1)",
                "ids.quotient_low.high = (quotient >> 128) & ((1 << 128) - 1)",
                "ids.quotient_high.low = (quotient >> 256) & ((1 << 128) - 1)",
                "ids.quotient_high.high = quotient >> 384",
                "ids.remainder.low = remainder & ((1 << 128) - 1)",
                "ids.remainder.high = remainder >> 128"

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