Question: What was the opearint profit (s$m) associated with an expenditure (s$m) of 12,127.8?
SQL: SELECT "Operating profit (S$m)" FROM "1-161591-2" WHERE "Expenditure (S$m)" = '12,127.8';

Question: What was the expenditure (s$m) associated with an operating profit (s$m) of 717.1?
SQL: SELECT "Expenditure (S$m)" FROM "1-161591-2" WHERE "Operating profit (S$m)" = '717.1';

Question: How many years was the operating profit (s$m) 717.1?
SQL: SELECT COUNT("Profit before taxation (S$m)") FROM "1-161591-2" WHERE "Operating profit (S$m)" = '717.1';