Transaction

[Error Code: 1101] cadence runtime error Execution failed:
error: underflow
  --> 0d9f864db053e9e893e038e3a24a0c45808b36bde34a0a6041c1dcb1752068f9:13:8
   |
13 |         let f1 = fee * I1B2sqr / scale * I2B1sqr / scale - I1B2;
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^