Yoshi wrote the standard form for three hundred sixty and nine hundred seven thousandths. This is the number 360.907. This number consists of 3 hunreds, 6 tens, 0 ones and 9 tenths, 0 hundredths, 7 thousandths.
Kim wrote a number with 3 more ones and 7 less tenths.
Yoshi wrote 0 ones, then Kim wrote 0 + 3 = 3 ones;
Yoshi wrote 9 tenths, then Kim wrote 9 - 7 = 2 tenths.
Actually Kim wrote 363.207 (see added place value table).