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-63999400
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-63999400
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0.6\times 10^{3}-6.4\times 10^{7}
Multiply 2 and 0.3 to get 0.6.
0.6\times 1000-6.4\times 10^{7}
Calculate 10 to the power of 3 and get 1000.
600-6.4\times 10^{7}
Multiply 0.6 and 1000 to get 600.
600-6.4\times 10000000
Calculate 10 to the power of 7 and get 10000000.
600-64000000
Multiply 6.4 and 10000000 to get 64000000.
-63999400
Subtract 64000000 from 600 to get -63999400.
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