Answer :
7(3,649)
=7(3,000+600+40+9)
=(7*3,000)+(7*600)+(7*40)+(7*9)
=21,000+4,200+280+63
=25,480+63
=25,543
=7(3,000+600+40+9)
=(7*3,000)+(7*600)+(7*40)+(7*9)
=21,000+4,200+280+63
=25,480+63
=25,543