1. $W$
2. $W$
4. $W$

5. $$\color{blue}{\rightarrow}\color{black}\;W \;= \;D\cdot m$$

1. $m$
2. $m$
4. $m$

1. $D$
2. $D$
4. $D$

5. $$\color{blue}{\rightarrow}\color{black}\;D \;= \;\frac{W}{m}$$

1. $w_R$
2. $w_R$
4. $w_R$

1. $H$
2. $H$
4. $H$

5. $$\color{blue}{\rightarrow}\color{black}\;H \;= \;w_R \cdot D$$

1. $w_T$
2. $w_T$
4. $w_T$

1. $E$
2. $E$
4. $E$

5. $$\color{blue}{\rightarrow}\color{black}\;E \;= \;w_T\cdot w_R \cdot D$$

   $$\color{blue}{\rightarrow}\color{black}\;E \;= \;w_T\cdot H$$

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If you want to introduce for example $1,6\cdot 10^{-9}$ type: 1.6E-9