Respuesta :

271,600 is the answer 
I usually figure it out on a piece of paper and I check it a couple time to see if I always get the same anwser
400 times 679 is 271,600.First we multiply 400 ×9 (=3,600), Second we multiply 400*70(=28,000),then we multiply 400× 600(=240,000), and last we add them together (3,600 + 28,000+240,000=271,600).