Answer:
12,000 8,000 1,400 7
Explanation:
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129,407.
12 ten-thousands = 12*10000=120,000.
8 thousands = 8*1000=8000;
this gives us 120,000+8,000=128,000.
14 hundreds = 14*100=1400;
this gives us 128,000+1,400=129,400.
7 ones = 7*1=7;
this gives us 129,400+7=129,407.
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