20.323
ananta brahmande aiche karaha ganana
maha-visnu eka-svase brahmara jivana
SYNONYMS
ananta brahmande—in innumerable universes; aiche—in that way; karaha ganana—just try to count; maha-visnu—Lord Maha-Visnu; eka-svase—by one exhalation; brahmara jivana—the duration of life of one Brahma "The number of manvantara-avataras for only one universe has been given.
One can only imagine how many manvantara-avataras exist in the innumerable universes.
And all these universes and Brahmas exist only during one exhalation of Maha-Visnu.