CREATE TABLE table_51821 ("Name" TEXT, "Code" TEXT, "Capacity" TEXT, "Type" TEXT, "Power" TEXT, "Torque" TEXT, "Top speed" TEXT, "Combined consumption" TEXT)

What is the power of the engine with a combined consumption of (gas/ethanol) and the k7m hi-torque code?
SELECT "Power" FROM table_51821 WHERE "Combined consumption" = '(gas/ethanol)' AND "Code" = 'k7m hi-torque'
SELECT "Power" FROM "table_51821" WHERE "Code" = 'k7m hi-torque' AND "Combined consumption" = '(gas/ethanol)'