66,98+2,13 % =
\(66,95+2,13\)%
\(66,95+\frac{2,13}{100}*66,95=66,95+0,0213*66,95=68,38\)
oder
\(1,0213*66,98=68,38\)
\({\color{red}66,98+2,13\%}\\ =66,98\times \frac{100+2,13}{100}\\ =66,98\times\frac{102,13}{100}\\ \color{blue}=68,406674\)
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