399+1
401-1
20
820
4000/10
etc
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400 + 500 = 900
To find the value of x when 16x equals 400, you would divide 400 by 16. This calculation results in x = 25. Therefore, 16 times 25 equals 400.
400 x 52 = 20,800.
400 x 1.0275 = 411
400.