Question

10x 10 x 9x59x100x 399XIO

Answer 1

(10)(10)(9)(59)(100)(399)(10)

=(100)(9)(59)(100)(399)(10)

=(900)(59)(100)(399)(10)

=(53100)(100)(399)(10)

=(5310000)(399)(10)

=(2118690000)(10)

=21186900000

thanks