11.11×6666+7778×22.22
=74059.26+172827.16
=246886.42
或
11.11×6666+7778×22.22
=11.11×6666+7778×11.11×2
=11.11×（6666+15556）
=11.11×22222
=22222×10+22222+22222×0.1+22222×0.01
=222220+22222+2222.2+222.22
=246886.42