How much is 7.5 × 46.7 + 39.9 × 2.5

How much is 7.5 × 46.7 + 39.9 × 2.5

7.5*46.7+39.9*2.5
=7.5*46.7+(46.7-6.8)*2.5
=46.7*(7.5+2.5)-6.8*(5/2)
=467-17
=450

How much is 5 + 58 + 588 + 5888 + 58888

5 32 50 240 500 1600 5000 8000 50000 5555 9872 points

English translation
In my dream, I saw many clouds of different colors with different numbers written on them
Slowly everything became a little easier
The patient was too grateful to speak to the doctor

I see many different colors in the dream cloud,they were marked with different numbers
Slowly everything became a little easier
Grateful to the doctors that patients were even speechless

English (31 14:58:25)
He is standing the door.
A.in front of                                   B.be hind
C.in the front of                             D.A and B

Choose D
D should be behind
Why C is not right, because if it refers to the transformation in front of something, it means in front of something, and in the front of something means in front of something instead of in front of something