252525×252252525252×525525×987×655−321666+987×654=_.
问题描述:
×252525×252252 525252×525525
=______. 987×655−321 666+987×654
答
252525×252252525252×525525×987×655−321666+987×654,=25×1010152×10101×252×1001525×1001×987×654+987×1−321987×654+666,=2552×252525×666666,=313×1,=313.故答案为:313