(191919/989898+190190/980980+19001900/98009800)÷19/98×9898/1919=_．
问题描述：
(
+191919 989898
+190190 980980
)÷19001900 98009800
×19 98
=______． 9898 1919
答
(191919989898+190190980980+1900190098009800)÷1998×98981919，=(19×1010198×10101+190×1001980×1001+1900×100019800×10001)÷1998×98×10119×101，=(1998+1998+1998)×9819×9819，=3×1998×9819×9819...