How can n be converted into kg 5156N=?kg

How can n be converted into kg 5156N=?kg

5156N=5156/9.8kg=526kg

Physically, kg = n?
Kg = cattle?
Why can kilogram (unit) be changed into cattle sometimes

The kilogram is the unit of weight and Newton is the unit of force
The two can not be equated
When you turn a kilogram into a cow, you must multiply it by G
Example: a person weighs 50kg, how much n does he weigh?
Known: M = 50kg, g = 9.8n/kg
Ask: g =?
G=mg=50kg*9.8N/kg=490N
Answer: it weighs 490N
The main reason is that you don't know who these two units describe

What's the unit of LBS? How is it converted to kg

LBS is lbs, 1lbs = 0.4536 kg