计算:(191919/989898+190190/980980+19001900/98009800)÷19/98×9898/1919=

问题描述:

计算:(

191919
989898
+
190190
980980
+
19001900
98009800
)÷
19
98
×
9898
1919
=

(191919989898+190190980980+1900190098009800)÷1998×98981919=(19×1010198×10101+190×1001980×1001+1900×100019800×10001)×9819×98×10119×101=(1998+1998+1998)×9819×9819=3×1998×9819×9819...