Other countries provide for ad hoc multi-member constituencies, not corresponding automatically to administrative entities. This is unavoidable when the number of seats per constituency is fixed: for example, Macedonian law provides for 6 in-country constituencies which each elect 20 members and one constituency of 3 seats for voters living abroad. . Chile uses multi-member constituencies for both the Chamber of Deputies and the Senate, 28 constituencies for the Chamber and 15 for the Senate. For the Senate the existing regional division is used, the constituencies for the Chamber are designed separately.  Other countries where constituencies do not correspond automatically to administrative divisions include Iceland, which has 6 constituencies with 10 or 11 seats for each one; Malta, where the Constitution prescribes that there will be between 9 and 15 constituencies and always an odd number. The number of seats per constituency is fixed in the law.