Issolvi (20*30div2+20(20*30+7*40+13*20div2)*13)div13

$$(20 \times 30 \div 2+20(20 \times 30+7 \times 40+13 \times 20 \div 2) \times 13) \div 13$$

Evalwa

$$\frac{262900}{13}\approx 20223.076923077$$

Passi tas-Soluzzjonijiet

Immultiplika 20 u 30 biex tikseb 600.

$$\frac{\frac{600}{2}+20\left(20\times 30+7\times 40+\frac{13\times 20}{2}\right)\times 13}{13}$$

Iddividi 600 b'2 biex tikseb300.

$$\frac{300+20\left(20\times 30+7\times 40+\frac{13\times 20}{2}\right)\times 13}{13}$$

Immultiplika 20 u 30 biex tikseb 600. Immultiplika 7 u 40 biex tikseb 280.

$$\frac{300+20\left(600+280+\frac{13\times 20}{2}\right)\times 13}{13}$$

Żid 600 u 280 biex tikseb 880.

$$\frac{300+20\left(880+\frac{13\times 20}{2}\right)\times 13}{13}$$

Immultiplika 13 u 20 biex tikseb 260.

$$\frac{300+20\left(880+\frac{260}{2}\right)\times 13}{13}$$

Iddividi 260 b'2 biex tikseb130.

$$\frac{300+20\left(880+130\right)\times 13}{13}$$

Żid 880 u 130 biex tikseb 1010.

$$\frac{300+20\times 1010\times 13}{13}$$

Immultiplika 20 u 1010 biex tikseb 20200.

$$\frac{300+20200\times 13}{13}$$

Immultiplika 20200 u 13 biex tikseb 262600.

$$\frac{300+262600}{13}$$

Żid 300 u 262600 biex tikseb 262900.

$$\frac{262900}{13}$$

Fattur

$$\frac{2 ^ {2} \cdot 5 ^ {2} \cdot 11 \cdot 239}{13} = 20223\frac{1}{13} = 20223.076923076922$$