Please answer this correctly without making mistakes

8000 + 8800 + 8000 + 8 million + 80 trillion + another a katrillion equals

Acompany manufactures large valves, packed in boxes. a shipment consists of 1500 valves packed in 75 boxes. each box has the outer dimensions 1.2 x 0.8 x 1.6 m and the inner dimensions 1.19 x 0.79 x 1.59 m. the boxes are loaded on a vehicle (truck + trailer). the available capacity in the vehicle combination is 140 m3. each valve has a volume of 0.06 m3. - calculate the load factor on the box level (%). - calculate the load factor on the vehicle level (%). - calculate the overall load factor (%).

Using only the digits 5, 6, 7, 8, how many different three digit numbers can be formed if no digit is repeated in a number?