107 N10^7 \ N107 N
2×107 N2 \times 10^{7} \mathrm{~N}2×107 N
3×107 N3 \times 10^{7} \mathrm{~N}3×107 N
4×107 N4 \times 10^{7} \mathrm{~N}4×107 N
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