CREATE TABLE table_75128 ("Year" FLOAT, "Chart" TEXT, "Track" TEXT, "Peak" FLOAT, "Weeks on Chart" FLOAT)

Name the total number of weeks for si te vas and peak less than 7 and year less than 2000
SELECT COUNT("Weeks on Chart") FROM table_75128 WHERE "Track" = 'si te vas' AND "Peak" < '7' AND "Year" < '2000'
SELECT COUNT("Weeks on Chart") FROM "table_75128" WHERE "Peak" < '7' AND "Track" = 'si te vas' AND "Year" < '2000'