解；33×34+34×35+35×36+36×37+37×38，
=33×（35-1）+34×35+35×36+（35+1）×37+（35+2）×38，
=33×35-33+34×35+35×36+35×37+37+35×38+2×38，
=35×（33+34+36+37+38）-33+37+76，
=35×（200-22）+80，
=7000-770+80，
=6310．