Whakaoti i te 391.6-21.5*(0.38+0.25)*0.6-51.38*3.45=

$$391.6-21.5 \times (0.38+0.25) \times 0.6-51.38 \times 3.45=$$

Aromātai

$$206.212$$

Ngā Upane Otinga

Tāpirihia te 0.38 ki te 0.25, ka 0.63.

$$391.6-21.5\times 0.63\times 0.6-51.38\times 3.45$$

Whakareatia te 21.5 ki te 0.63, ka 13.545.

$$391.6-13.545\times 0.6-51.38\times 3.45$$

Whakareatia te 13.545 ki te 0.6, ka 8.127.

$$391.6-8.127-51.38\times 3.45$$

Tangohia te 8.127 i te 391.6, ka 383.473.

$$383.473-51.38\times 3.45$$

Whakareatia te 51.38 ki te 3.45, ka 177.261.

$$383.473-177.261$$

Tangohia te 177.261 i te 383.473, ka 206.212.

$$206.212$$

Tauwehe

$$\frac{31 \cdot 1663}{2 \cdot 5 ^ {3}} = 206\frac{53}{250} = 206.212$$