Datrys 800*72+800*72*73/2*12*10/100

$$800 \times 72 + 800 \times \frac { 72 \times 73 } { 2 \times 12 } \times \frac { 10 } { 100 }$$

Enrhifo

$$75120$$

Camau Ateb

Lluosi 800 a 72 i gael 57600.

$$57600+800\times \frac{72\times 73}{2\times 12}\times \frac{10}{100}$$

Canslo 2\times 12 yn y rhifiadur a'r enwadur.

$$57600+800\times 3\times 73\times \frac{10}{100}$$

Lluosi 3 a 73 i gael 219.

$$57600+800\times 219\times \frac{10}{100}$$

Lluosi 800 a 219 i gael 175200.

$$57600+175200\times \frac{10}{100}$$

Lleihau'r ffracsiwn \frac{10}{100} i'r graddau lleiaf posib drwy dynnu a chanslo allan 10.

$$57600+175200\times \frac{1}{10}$$

Lluosi 175200 a \frac{1}{10} i gael \frac{175200}{10}.

$$57600+\frac{175200}{10}$$

Rhannu 175200 â 10 i gael 17520.

$$57600+17520$$

Adio 57600 a 17520 i gael 75120.

$$75120$$

Ffactor

$$2^{4}\times 3\times 5\times 313$$