Koala -22×365(days in a year)=8,030 hours in a year
panda-10×365(days in a year)=3,650
8,030-3,650=4,380
koalas sleep 4380 hours more than a panda
there's your answer :)
The 4 in the ten thousands place is 10 times the amount of the 4 in the thousands place
The easiest way to do this is to put each term in the numerator over the denominator and do the division/reducing for each one. Like this:

. The first term reduces to

, the second to

, and the third to 3. Putting them all together with the signs in between we have