# Large numbers multiplication

**URL:** https://discourse.julialang.org/t/large-numbers-multiplication/116574
**Category:** New to Julia
**Tags:** question
**Created:** [July 3, 2024, 8:48am UTC](https://discourse.julialang.org/t/large-numbers-multiplication/116574 "2024-07-03T08:48:15Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![oheil](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/oheil/32/220745_2.png) [@oheil](https://discourse.julialang.org/u/oheil)
#### Post date: [July 3, 2024, 8:55am UTC](https://discourse.julialang.org/t/large-numbers-multiplication/116574/2 "2024-07-03T08:55:55Z")

</div>

```julia
julia> 3.321155762205247e-10 * 6.022e23 * 0.5e-3 * 1e-6
100000.0

julia> 3.321155762205247e-10 * ( 6.022e23 * 0.5e-3 * 1e-6 )
99999.99999999999

```

It’s about floating point numbers and how they are represented in binary machines.  
Last time we had this was here: [Mismatch between nextfloat(0.0) and eps(Float64)](https://discourse.julialang.org/t/mismatch-between-nextfloat-0-0-and-eps-float64/115104)

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