CREATE TABLE table_5678 ("County" TEXT, "Per capita income" TEXT, "Median household income" TEXT, "Median family income" TEXT, "Population" FLOAT, "Number of households" FLOAT)

When the population is greater than 146,445 in the county of Carroll, what is the number of households?
SELECT SUM("Number of households") FROM table_5678 WHERE "Population" > '146,445' AND "County" = 'carroll'
SELECT SUM("Number of households") FROM "table_5678" WHERE "County" = 'carroll' AND "Population" > '146,445'