hi i do not understand how to get this as a ratio. 1.25 x 10-2Sv-1 = 1:80(adsbygoogle = window.adsbygoogle || []).push({});

(the - is a to the power of), how does that equal 1:80 what do i do step by step to get 1:80

please could you help i do not understand this.

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# Ratio question

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