Calculate: $$894-89-111-95-105-94=$$~\uline{~~~~~~~~~~}~ 
Overseas Competition->Knowledge Point->Calculation Modules->Whole Numbers->Whole Numbers Addition and Subtraction ->Operation Strategy in Addition and Subtraction of Rounding Whole Numbers
$$(894-94)-(89+111)-(95+105)$$  $$=800-200-200$$  $$=400$$ 