diff --git a/euler_go/.ex8.go.swp b/euler_go/.ex8.go.swp
new file mode 100644
index 0000000..ae56ab6
Binary files /dev/null and b/euler_go/.ex8.go.swp differ
diff --git a/euler_go/ex8.go b/euler_go/ex8.go
new file mode 100644
index 0000000..c0254d7
--- /dev/null
+++ b/euler_go/ex8.go
@@ -0,0 +1,34 @@
+package main
+
+import (
+	"fmt"
+	"strconv"
+)
+
+func multiply(n string) (res int, err error) {
+	if len(n) <= -1 {
+		return 0, err
+	}
+
+	for i := 0; i < len(n); i++ {
+		m, err := strconv.Atoi(string([]rune(n)[i]))
+		if err != nil {
+			return 0, err
+		}
+		res = m * res
+	}
+
+	return res, nil
+}
+
+func main() {
+	numToString := "731671765313306249192251196744265747423553491949349698352031277450632623957831801698480186947885184385861560789112949495459501737958331952853208805511254069874715852386305071569329096329522744304355766896648950445244523161731856403098711121722383113622298934233803081353362766142828064444866452387493035890729629049156044077239071381051585930796086670172427121883998797908792274921901699720888093776657273330010533678812202354218097512545405947522435258490771167055601360483958644670632441572215539753697817977846174064955149290862569321978468622482839722413756570560574902614079729686524145351004748216637048440319989000889524345065854122758866688116427171479924442928230863465674813919123162824586178664583591245665294765456828489128831426076900422421902267105562632111110937054421750694165896040807198403850962455444362981230987879927244284909188845801561660979191338754992005240636899125607176060588611646710940507754100225698315520005593572972571636269561882670428252483600823257530420752963450"
+
+	first13 := numToString[:13]
+	fmt.Printf(first13)
+	res, err := multiply(first13)
+	if err != nil {
+		fmt.Print(err)
+	}
+	fmt.Print(res)
+}
diff --git a/ruby_algo/README.md b/euler_ruby/README.md
similarity index 100%
rename from ruby_algo/README.md
rename to euler_ruby/README.md
diff --git a/ruby_algo/ex1.rb b/euler_ruby/ex1.rb
similarity index 100%
rename from ruby_algo/ex1.rb
rename to euler_ruby/ex1.rb
diff --git a/ruby_algo/ex2.rb b/euler_ruby/ex2.rb
similarity index 100%
rename from ruby_algo/ex2.rb
rename to euler_ruby/ex2.rb
diff --git a/ruby_algo/ex3.rb b/euler_ruby/ex3.rb
similarity index 100%
rename from ruby_algo/ex3.rb
rename to euler_ruby/ex3.rb
diff --git a/ruby_algo/ex4.rb b/euler_ruby/ex4.rb
similarity index 100%
rename from ruby_algo/ex4.rb
rename to euler_ruby/ex4.rb
diff --git a/ruby_algo/ex5.rb b/euler_ruby/ex5.rb
similarity index 100%
rename from ruby_algo/ex5.rb
rename to euler_ruby/ex5.rb