Whakaoti i te (12+16+20)*15+22*(20*16/2)

$$(12+16+20) \times 15+22 \times ( \frac{ 20 \times 16 }{ 2 } )$$

Aromātai

$$4240$$

Ngā Upane Otinga

Tāpirihia te 12 ki te 16, ka 28.

$$\left(28+20\right)\times 15+22\times \frac{20\times 16}{2}$$

Tāpirihia te 28 ki te 20, ka 48.

$$48\times 15+22\times \frac{20\times 16}{2}$$

Whakareatia te 48 ki te 15, ka 720.

$$720+22\times \frac{20\times 16}{2}$$

Whakareatia te 20 ki te 16, ka 320.

$$720+22\times \frac{320}{2}$$

Whakawehea te 320 ki te 2, kia riro ko 160.

$$720+22\times 160$$

Whakareatia te 22 ki te 160, ka 3520.

$$720+3520$$

Tāpirihia te 720 ki te 3520, ka 4240.

$$4240$$

Tauwehe

$$2^{4}\times 5\times 53$$