Answer:
![900](https://img.qammunity.org/2021/formulas/mathematics/high-school/fswcjlxmgrmdtcxwa1b15gv5gulp6h6sub.png)
Multiply
![-18*-10=180](https://img.qammunity.org/2021/formulas/mathematics/college/y7bdny12n5oetuasxd2y4han8mgear8e7w.png)
Multiply
![180*5=900](https://img.qammunity.org/2021/formulas/mathematics/college/44j6d825wnu3w26rup08e1czrtua4lo1vo.png)
Note
Multiplying/Dividing a negative to a positive will equal a negative. (N×P=N)
Multiplying/Dividing a negative to a negative will equal a positive. (N×N=P)
Multiplying/Dividing a positive to a positive will equal a positive. (P×P=P)