Answer:
12,000, 900, 210, 18 4376x3=13128
Step-by-step explanation:
In the 1st box, you put the product of 4,000 x 3 = 12,000
In the 2nd, you put the product of 300 x 3 = 900
In the 3rd, you put the product of 70 x 3 = 210
In the 4th, you put the product of 6 x 3 = 18
Then you add your answers
12,000 + 900 + 210 + 18 = 13,128