Answer:
10,000,000,000,000,000,000,000,000,000,000,000,000,000,000
Step-by-step explanation:
10,000,000,000,000,000,000 x 1,000,000,000,000,000,000,000,000 =
42
1563.2
If you just multiply 0.3 by 10 you will get 3
Now all you need to do is write 3 or have a number which has unit place value of 3
It would be 40% decrease
