Oh honey, it's simple math. 7.86 rounded to the nearest tenth is 7.9. Just take a look at that number and give it a little nudge up to the next level. Voilà, you've got yourself a rounded figure.
4.4, to the nearest tenth.
It is already rounded to the nearest tenth.
158.097 to nearest tenth = 158.1
It is 9.5 rounded to the nearest tenth
73.19, to the nearest tenth, is 73.2
Round 3.7416573 to the nearest tenth is 3.7
786.0
4.4, to the nearest tenth.
118.0
It is 61.9 to the nearest tenth
It then is 471.4 to the nearest tenth
It is 263.8 to the nearest tenth
24.6 Round 24.583 to the nearest tenth? => 24.600
73.19, to the nearest tenth, is 73.2
It is already rounded to the nearest tenth.
158.097 to nearest tenth = 158.1
It is 9.5 rounded to the nearest tenth